"I knew we had a fantastic squad and were capable of anything," said Crouch.
"But the top four have been the top four for so many years because they've been the most consistent.
"For a club like us to break into the top four is a fantastic achievement. It's probably one of the best nights I've been part of."
Crouch played down his role after scoring the goal which secured the win.
"Throughout the course of the season the boys have been fantastic, the whole squad and we managed to get fourth but we still have to qualify," he added. "I was in the right place at the right time. The keeper made a good save and I was in the right place just to nod it home.
"On the balance of play we deserved to win tonight."