Finding the Fourth Proportional to 8,887.34, 12,280.76 and 7,610.99

Step by Step Solution

1. Step 1: Write the proportion equation
   8,887.34 : 12,280.76 = 7,610.99 : x
2. Step 2: Convert to fraction form
   8,887.34/12,280.76 = 7,610.99/x
3. Step 3: Cross multiply
   8,887.34x = 12,280.76 × 7,610.99
4. Step 4: Simplify right side
   8,887.34x = 93,468,741.55
5. Step 5: Solve for x
   x = 93,468,741.55/8,887.34
6. Step 6: Final answer
   x = 10,517.07