Finding the Fourth Proportional to 10,446.72, 15,650.46 and 5,175.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,446.72 : 15,650.46 = 5,175.60 : x
2. Step 2: Convert to fraction form
   10,446.72/15,650.46 = 5,175.60/x
3. Step 3: Cross multiply
   10,446.72x = 15,650.46 × 5,175.60
4. Step 4: Simplify right side
   10,446.72x = 81,000,520.78
5. Step 5: Solve for x
   x = 81,000,520.78/10,446.72
6. Step 6: Final answer
   x = 7,753.68