Finding the Fourth Proportional to 10,139.88, 15,185.12 and 5,744

Step by Step Solution

1. Step 1: Write the proportion equation
   10,139.88 : 15,185.12 = 5,744 : x
2. Step 2: Convert to fraction form
   10,139.88/15,185.12 = 5,744/x
3. Step 3: Cross multiply
   10,139.88x = 15,185.12 × 5,744
4. Step 4: Simplify right side
   10,139.88x = 87,223,329.28
5. Step 5: Solve for x
   x = 87,223,329.28/10,139.88
6. Step 6: Final answer
   x = 8,602.01