Finding the Fourth Proportional to 21,451,942.32, 29,613,222.72 and 12,752,931.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,451,942.32 : 29,613,222.72 = 12,752,931.12 : x
2. Step 2: Convert to fraction form
   21,451,942.32/29,613,222.72 = 12,752,931.12/x
3. Step 3: Cross multiply
   21,451,942.32x = 29,613,222.72 × 12,752,931.12
4. Step 4: Simplify right side
   21,451,942.32x = 377,655,389,589,379
5. Step 5: Solve for x
   x = 377,655,389,589,379/21,451,942.32
6. Step 6: Final answer
   x = 17,604,717.74