Finding the Fourth Proportional to 22,665,805.68, 31,279,920.87 and 12,745,810.62

Step by Step Solution

1. Step 1: Write the proportion equation
   22,665,805.68 : 31,279,920.87 = 12,745,810.62 : x
2. Step 2: Convert to fraction form
   22,665,805.68/31,279,920.87 = 12,745,810.62/x
3. Step 3: Cross multiply
   22,665,805.68x = 31,279,920.87 × 12,745,810.62
4. Step 4: Simplify right side
   22,665,805.68x = 398,687,947,617,605.62
5. Step 5: Solve for x
   x = 398,687,947,617,605.62/22,665,805.68
6. Step 6: Final answer
   x = 17,589,842.30