Sawchuk Company is considering an important capital project it will raise external capital to finance. The firm is financed in part by equity investors and in part by rolling over $500 million par value of 10-year annual bonds on which it pays interest totaling $30 million per year. Each bond has a face value of $1,000. The flotation costs for a new bond issue would be 1% of the total proceeds. Over the past decade, the firm has maintained an average compound growth rate of 4.2% in its dividends, a rate analysts expect it can maintain. This year, each common share received a total of $3.00 worth of dividends. These shares are trading at $50 but the net proceeds from issuing new shares would be only $48.50 each (floatation costs are $1.50/share). Sawchuk presently has 8,000,000 common shares outstanding. Finally, Sawchuk's investment bankers estimate that new preferred shares providing a $2 annual dividend could be issued to investors at $24 per share to 'net' Sawchuk $22 per share issued (after flotation costs). The firm already has 1,000,000 of these preferred shares outstanding. Its tax rate is 20%. Sawchuk's preferred shares are trading at $24, its bonds at $950 and common shares at $50.

Assuming Sawchuk can borrow at the same rate its debt is currently financed at, calculate its after-tax weighted average cost of capital (WACC)