Finding the Fourth Proportional to 9,168.57, 13,766.90 and 8,082.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,168.57 : 13,766.90 = 8,082.09 : x
2. Step 2: Convert to fraction form
   9,168.57/13,766.90 = 8,082.09/x
3. Step 3: Cross multiply
   9,168.57x = 13,766.90 × 8,082.09
4. Step 4: Simplify right side
   9,168.57x = 111,265,284.41
5. Step 5: Solve for x
   x = 111,265,284.41/9,168.57
6. Step 6: Final answer
   x = 12,135.51