Finding the Fourth Proportional to 11,150.64, 15,375.12 and 10,472.64

Step by Step Solution

1. Step 1: Write the proportion equation
   11,150.64 : 15,375.12 = 10,472.64 : x
2. Step 2: Convert to fraction form
   11,150.64/15,375.12 = 10,472.64/x
3. Step 3: Cross multiply
   11,150.64x = 15,375.12 × 10,472.64
4. Step 4: Simplify right side
   11,150.64x = 161,018,096.72
5. Step 5: Solve for x
   x = 161,018,096.72/11,150.64
6. Step 6: Final answer
   x = 14,440.26