Finding the Fourth Proportional to 3,728.43, 5,581.71 and 2,492.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728.43 : 5,581.71 = 2,492.78 : x
2. Step 2: Convert to fraction form
   3,728.43/5,581.71 = 2,492.78/x
3. Step 3: Cross multiply
   3,728.43x = 5,581.71 × 2,492.78
4. Step 4: Simplify right side
   3,728.43x = 13,913,947.15
5. Step 5: Solve for x
   x = 13,913,947.15/3,728.43
6. Step 6: Final answer
   x = 3,731.85