Finding the Fourth Proportional to 14,156,785.12, 21,131,827.86 and 12,147,938.24

Step by Step Solution

1. Step 1: Write the proportion equation
   14,156,785.12 : 21,131,827.86 = 12,147,938.24 : x
2. Step 2: Convert to fraction form
   14,156,785.12/21,131,827.86 = 12,147,938.24/x
3. Step 3: Cross multiply
   14,156,785.12x = 21,131,827.86 × 12,147,938.24
4. Step 4: Simplify right side
   14,156,785.12x = 256,708,139,741,591.38
5. Step 5: Solve for x
   x = 256,708,139,741,591.38/14,156,785.12
6. Step 6: Final answer
   x = 18,133,222.87