Finding the Fourth Proportional to 3,687.42, 5,089.71 and 2,429.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,687.42 : 5,089.71 = 2,429.40 : x
2. Step 2: Convert to fraction form
   3,687.42/5,089.71 = 2,429.40/x
3. Step 3: Cross multiply
   3,687.42x = 5,089.71 × 2,429.40
4. Step 4: Simplify right side
   3,687.42x = 12,364,941.47
5. Step 5: Solve for x
   x = 12,364,941.47/3,687.42
6. Step 6: Final answer
   x = 3,353.28