Suppose in question 1, the tuition obligations have a Macaulay duration of 6.86 in years and a present value of 52,798. In order to immunize against the tuition payments by investing in some combination of two bonds with duration 2.70 and 8.22, what is the dollar amount that you should invest in the bond with duration 8.22? Assume annual compounding. Round your answer to 2 decimal places.