Finding the Fourth Proportional to 8,417.52, 12,644.51 and 5,132.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,417.52 : 12,644.51 = 5,132.57 : x
2. Step 2: Convert to fraction form
   8,417.52/12,644.51 = 5,132.57/x
3. Step 3: Cross multiply
   8,417.52x = 12,644.51 × 5,132.57
4. Step 4: Simplify right side
   8,417.52x = 64,898,743.81
5. Step 5: Solve for x
   x = 64,898,743.81/8,417.52
6. Step 6: Final answer
   x = 7,709.96