Finding the Fourth Proportional to 10,152,414.10, 15,228,621.15 and 7,129,105.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,152,414.10 : 15,228,621.15 = 7,129,105.30 : x
2. Step 2: Convert to fraction form
   10,152,414.10/15,228,621.15 = 7,129,105.30/x
3. Step 3: Cross multiply
   10,152,414.10x = 15,228,621.15 × 7,129,105.30
4. Step 4: Simplify right side
   10,152,414.10x = 108,566,443,752,157.09
5. Step 5: Solve for x
   x = 108,566,443,752,157.09/10,152,414.10
6. Step 6: Final answer
   x = 10,693,657.95