Answer:
 $22,583,305.84
Step-by-step explanation:
The computation of the maximum initial cost is as follows
But before that following calculations need to be done
WACC = wd × rd + we × re 
 Where, 
 Weight of debt wd = 0.85 ÷ (1 +0.85) = 0.85 ÷1.85 
 Weight of equity we = 1 ÷ (1 + 0.85) = 1 ÷ 1.85 
 After-tax cost of debt, rd = 5.3% 
 And the cost of equity, re = 12.5% 
Now 
WACC = (0.85 ÷ 1.85) × 5.3% + (1 ÷ 1.85) × 12.5% 
= 9.19% 
 The discount rate would be 
 = WACC + adjustment factor of +2% 
 = 9.19% + 2% 
= 11.19%
Now 
PV of future Cash Flows is 
= After-tax cash savings ÷ (k –g) 
 Where, 
 After-tax cash savings = $1.85 million 
 k = 11.19% per year 
 g = 3% per year 
 Therefore, 
= $1,850,000 ÷ (0.1119 - 0.03) 
= $22,583,305.84