"The most powerful force in the universe is compound interest," according to an article in the Morningstar Column dated February 13, 2007.

"The most powerful force in the universe is compound interest," according to an article in the Morningstar Column dated February 13, 2007. Patricia Wiseman is 30 years old and she invests $4,000 in an annuity, earning a 8% compound annual return at the beginning of each period, for 21 years. What is the cash value of this annuity due at the end of 21 years? (Round your answer to the nearest cent.)

  Cash value$