Finding the Fourth Proportional to 8,760.16, 12,089.10 and 4,781.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,760.16 : 12,089.10 = 4,781.31 : x
2. Step 2: Convert to fraction form
   8,760.16/12,089.10 = 4,781.31/x
3. Step 3: Cross multiply
   8,760.16x = 12,089.10 × 4,781.31
4. Step 4: Simplify right side
   8,760.16x = 57,801,734.72
5. Step 5: Solve for x
   x = 57,801,734.72/8,760.16
6. Step 6: Final answer
   x = 6,598.25