Finding the Fourth Proportional to 8,963.89, 12,352.54 and 7,547.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,963.89 : 12,352.54 = 7,547.80 : x
2. Step 2: Convert to fraction form
   8,963.89/12,352.54 = 7,547.80/x
3. Step 3: Cross multiply
   8,963.89x = 12,352.54 × 7,547.80
4. Step 4: Simplify right side
   8,963.89x = 93,234,501.41
5. Step 5: Solve for x
   x = 93,234,501.41/8,963.89
6. Step 6: Final answer
   x = 10,401.12