Finding the Fourth Proportional to 3,238.72, 4,470.88 and 2,492.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,238.72 : 4,470.88 = 2,492.40 : x
2. Step 2: Convert to fraction form
   3,238.72/4,470.88 = 2,492.40/x
3. Step 3: Cross multiply
   3,238.72x = 4,470.88 × 2,492.40
4. Step 4: Simplify right side
   3,238.72x = 11,143,221.31
5. Step 5: Solve for x
   x = 11,143,221.31/3,238.72
6. Step 6: Final answer
   x = 3,440.63