Given:
- Vilas is 26th from left.
- Kewal is 10 places left of Vilas, so Kewal is 16th from left.
- There are 3 boys between Kewal and Satish, but Satish could be either left or right of Kewal (position not specified).
- Satish is 10 places right of Rohan.
Since Satish's exact position is ambiguous, the position of Rohan cannot be conclusively determined. Therefore, data is inadequate.