Finding the Fourth Proportional to 22,723,390.32, 31,359,052.38 and 13,438,919.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,723,390.32 : 31,359,052.38 = 13,438,919.20 : x
2. Step 2: Convert to fraction form
   22,723,390.32/31,359,052.38 = 13,438,919.20/x
3. Step 3: Cross multiply
   22,723,390.32x = 31,359,052.38 × 13,438,919.20
4. Step 4: Simplify right side
   22,723,390.32x = 421,431,771,123,387.69
5. Step 5: Solve for x
   x = 421,431,771,123,387.69/22,723,390.32
6. Step 6: Final answer
   x = 18,546,166.10