Finding the Fourth Proportional to 8,989.43, 12,397.33 and 5,632.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,989.43 : 12,397.33 = 5,632.60 : x
2. Step 2: Convert to fraction form
   8,989.43/12,397.33 = 5,632.60/x
3. Step 3: Cross multiply
   8,989.43x = 12,397.33 × 5,632.60
4. Step 4: Simplify right side
   8,989.43x = 69,829,155.88
5. Step 5: Solve for x
   x = 69,829,155.88/8,989.43
6. Step 6: Final answer
   x = 7,767.92