Finding the Fourth Proportional to 11,926,861.60, 16,458,619.98 and 7,288,402.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,926,861.60 : 16,458,619.98 = 7,288,402.72 : x
2. Step 2: Convert to fraction form
   11,926,861.60/16,458,619.98 = 7,288,402.72/x
3. Step 3: Cross multiply
   11,926,861.60x = 16,458,619.98 × 7,288,402.72
4. Step 4: Simplify right side
   11,926,861.60x = 119,957,050,629,678.34
5. Step 5: Solve for x
   x = 119,957,050,629,678.34/11,926,861.60
6. Step 6: Final answer
   x = 10,057,721.36