Company Q has debt with an annual yield to maturity (including floatation costs) of 5.19%. The market value of the common stock is $446,400,000, the market value of the debt is $74,400,000, and the market value of the preferred is $99,200,000. The marginal corporate tax rate is 21%. The annual required return on the common stock is 10.03%. The annual required return on the preferred is 8.50%. What is Company Q's annual WACC? Please round to four places.