A firm has 12,000 shares of common stock outstanding with a book value of $20 per share and a market value of $39. There are 5,000 shares of preferred stock with a book value of $22 and a market value of $26. There is a $400,000 face value bond issue outstanding that is selling at 87% of par. What weight should be placed on the preferred stock when computing the firm's WACC?

Please show me the work (solve it by formula)

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