Finding the Fourth Proportional to 3,685.02, 5,087.42 and 2,429.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,685.02 : 5,087.42 = 2,429.72 : x
2. Step 2: Convert to fraction form
   3,685.02/5,087.42 = 2,429.72/x
3. Step 3: Cross multiply
   3,685.02x = 5,087.42 × 2,429.72
4. Step 4: Simplify right side
   3,685.02x = 12,361,006.12
5. Step 5: Solve for x
   x = 12,361,006.12/3,685.02
6. Step 6: Final answer
   x = 3,354.39