What was the arithmetic average return for a stock that had the following annual returns over the past 4 years: 18.00% (4 years ago), 20.00% (3 years ago), -17.00% (2 years ago), and -36.00% (last year)?

What is X, the return of a stock 2 years ago, if the stock had returns of -16.00% (4 years ago), 14.00% (3 years ago), X (2 years ago), and 3.22% (last year), and over the past four years, the arithmetic average annual return for the stock was 5.25%?