Finding the Fourth Proportional to 14,156,757.69, 21,131,786.86 and 12,147,910.71

Step by Step Solution

1. Step 1: Write the proportion equation
   14,156,757.69 : 21,131,786.86 = 12,147,910.71 : x
2. Step 2: Convert to fraction form
   14,156,757.69/21,131,786.86 = 12,147,910.71/x
3. Step 3: Cross multiply
   14,156,757.69x = 21,131,786.86 × 12,147,910.71
4. Step 4: Simplify right side
   14,156,757.69x = 256,707,059,808,417.34
5. Step 5: Solve for x
   x = 256,707,059,808,417.34/14,156,757.69
6. Step 6: Final answer
   x = 18,133,181.73