Finding the Fourth Proportional to 10,345.10, 15,550.05 and 10,150.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,345.10 : 15,550.05 = 10,150.70 : x
2. Step 2: Convert to fraction form
   10,345.10/15,550.05 = 10,150.70/x
3. Step 3: Cross multiply
   10,345.10x = 15,550.05 × 10,150.70
4. Step 4: Simplify right side
   10,345.10x = 157,843,892.54
5. Step 5: Solve for x
   x = 157,843,892.54/10,345.10
6. Step 6: Final answer
   x = 15,257.84