Finding the Fourth Proportional to 7,142.88, 10,714.18 and 3,862.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,142.88 : 10,714.18 = 3,862.40 : x
2. Step 2: Convert to fraction form
   7,142.88/10,714.18 = 3,862.40/x
3. Step 3: Cross multiply
   7,142.88x = 10,714.18 × 3,862.40
4. Step 4: Simplify right side
   7,142.88x = 41,382,448.83
5. Step 5: Solve for x
   x = 41,382,448.83/7,142.88
6. Step 6: Final answer
   x = 5,793.52