Finding the Fourth Proportional to 8,799.69, 12,142.13 and 5,022.87

Step by Step Solution

1. Step 1: Write the proportion equation
   8,799.69 : 12,142.13 = 5,022.87 : x
2. Step 2: Convert to fraction form
   8,799.69/12,142.13 = 5,022.87/x
3. Step 3: Cross multiply
   8,799.69x = 12,142.13 × 5,022.87
4. Step 4: Simplify right side
   8,799.69x = 60,988,315.40
5. Step 5: Solve for x
   x = 60,988,315.40/8,799.69
6. Step 6: Final answer
   x = 6,930.73