Finding the Fourth Proportional to 8,799.82, 12,142.65 and 5,166.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,799.82 : 12,142.65 = 5,166.16 : x
2. Step 2: Convert to fraction form
   8,799.82/12,142.65 = 5,166.16/x
3. Step 3: Cross multiply
   8,799.82x = 12,142.65 × 5,166.16
4. Step 4: Simplify right side
   8,799.82x = 62,730,872.72
5. Step 5: Solve for x
   x = 62,730,872.72/8,799.82
6. Step 6: Final answer
   x = 7,128.65