Finding the Fourth Proportional to 8,510.27, 12,766.61 and 2,665.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,510.27 : 12,766.61 = 2,665.31 : x
2. Step 2: Convert to fraction form
   8,510.27/12,766.61 = 2,665.31/x
3. Step 3: Cross multiply
   8,510.27x = 12,766.61 × 2,665.31
4. Step 4: Simplify right side
   8,510.27x = 34,026,916.13
5. Step 5: Solve for x
   x = 34,026,916.13/8,510.27
6. Step 6: Final answer
   x = 3,998.34