In 4 years from today, Steph plans to invest 7,800 dollars in an account that is expected to earn 3.95 percent per year. She also expects to make an investment of X in the same account in 3 year(s) from today. What is X if Steph expects to have 27,600 dollars in her account in 8 years from today and the expected return for the account is 3.95 percent per year?