Finding the Fourth Proportional to 3,726.18, 5,142.15 and 2,132.64

Step by Step Solution

1. Step 1: Write the proportion equation
   3,726.18 : 5,142.15 = 2,132.64 : x
2. Step 2: Convert to fraction form
   3,726.18/5,142.15 = 2,132.64/x
3. Step 3: Cross multiply
   3,726.18x = 5,142.15 × 2,132.64
4. Step 4: Simplify right side
   3,726.18x = 10,966,354.78
5. Step 5: Solve for x
   x = 10,966,354.78/3,726.18
6. Step 6: Final answer
   x = 2,943.06