Finding the Fourth Proportional to 8,760.15, 12,086.82 and 8,377.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,760.15 : 12,086.82 = 8,377.43 : x
2. Step 2: Convert to fraction form
   8,760.15/12,086.82 = 8,377.43/x
3. Step 3: Cross multiply
   8,760.15x = 12,086.82 × 8,377.43
4. Step 4: Simplify right side
   8,760.15x = 101,256,428.04
5. Step 5: Solve for x
   x = 101,256,428.04/8,760.15
6. Step 6: Final answer
   x = 11,558.76