Finding the Fourth Proportional to 8,766.10, 12,097.28 and 4,989.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,766.10 : 12,097.28 = 4,989.55 : x
2. Step 2: Convert to fraction form
   8,766.10/12,097.28 = 4,989.55/x
3. Step 3: Cross multiply
   8,766.10x = 12,097.28 × 4,989.55
4. Step 4: Simplify right side
   8,766.10x = 60,359,983.42
5. Step 5: Solve for x
   x = 60,359,983.42/8,766.10
6. Step 6: Final answer
   x = 6,885.61