To solve this problem, we first need to identify every fourth element starting from the element '7' and eliminate them from the sequence.
- Original Sequence: 9 H 7 Z A 9 2 B C H 3 1 X W V 5 T 4 M 6 0 Q 8 F J.
- Eliminate every fourth element starting from '7':
- First element to eliminate is 'A' (count: 9, H, 7, Z - counting starts with '7').
- Continue counting from the next element after 'A': 9, 2, B, C.
- Next, eliminate '2'.
- Continue counting: H, 3, 1, X.
- Next, eliminate '3'.
- Continue counting: W, V, 5, T.
- Next, eliminate '5'.
- Continue counting: 4, M, 6, 0.
- Next, eliminate '6'.
- Continue: Q, 8, F, J.
- Next, eliminate 'F'.
Remaining Sequence after elimination: 9, H, 7, Z, 9, B, C, H, 1, X, W, V, T, 4, M, 0, Q, 8, J. - Next, find the 12th position from the right:
- Counting backwards: J, 8, Q, 0, M, 4, T, V, W, X, 1, H.
- Finally, find the fifth element to the left of this 12th position:
- Counting left from 'H': 9, B, C, H, Z.
The fifth letter/number to the left of the 12th position from the right in the modified sequence is Z.