Finding the Fourth Proportional to 3,787.20, 5,222.88 and 2,387.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,787.20 : 5,222.88 = 2,387.52 : x
2. Step 2: Convert to fraction form
   3,787.20/5,222.88 = 2,387.52/x
3. Step 3: Cross multiply
   3,787.20x = 5,222.88 × 2,387.52
4. Step 4: Simplify right side
   3,787.20x = 12,469,730.46
5. Step 5: Solve for x
   x = 12,469,730.46/3,787.20
6. Step 6: Final answer
   x = 3,292.60