Throckman Burglemeister is up to his old tricks again. 7 years ago, he bought shares in a gravel company for $45,000. Unfortunately, the company has not been very successful and now his shares are only worth $29,000. Mr. Burglemeister expects that his shares will continue to lose value at the same rate over the coming years (and he doesn't want to sell them because of another inscrutable tax scheme). If he's right about the rate, how much will Throckman Burglemeister's shares be worth after 4 more years? Answer as a dollar amount rounded to 2 decimal places (e.g., 12.34)