Finding the Fourth Proportional to 22,665,807.18, 31,279,922.94 and 12,745,812.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,665,807.18 : 31,279,922.94 = 12,745,812.12 : x
2. Step 2: Convert to fraction form
   22,665,807.18/31,279,922.94 = 12,745,812.12/x
3. Step 3: Cross multiply
   22,665,807.18x = 31,279,922.94 × 12,745,812.12
4. Step 4: Simplify right side
   22,665,807.18x = 398,688,020,921,318
5. Step 5: Solve for x
   x = 398,688,020,921,318/22,665,807.18
6. Step 6: Final answer
   x = 17,589,844.37