Finding the Fourth Proportional to 3,665.59, 5,059.28 and 2,487.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.59 : 5,059.28 = 2,487.04 : x
2. Step 2: Convert to fraction form
   3,665.59/5,059.28 = 2,487.04/x
3. Step 3: Cross multiply
   3,665.59x = 5,059.28 × 2,487.04
4. Step 4: Simplify right side
   3,665.59x = 12,582,631.73
5. Step 5: Solve for x
   x = 12,582,631.73/3,665.59
6. Step 6: Final answer
   x = 3,432.63