Finding the Fourth Proportional to 8,662.72, 11,951.28 and 5,475.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.72 : 11,951.28 = 5,475.10 : x
2. Step 2: Convert to fraction form
   8,662.72/11,951.28 = 5,475.10/x
3. Step 3: Cross multiply
   8,662.72x = 11,951.28 × 5,475.10
4. Step 4: Simplify right side
   8,662.72x = 65,434,453.13
5. Step 5: Solve for x
   x = 65,434,453.13/8,662.72
6. Step 6: Final answer
   x = 7,553.57