Finding the Fourth Proportional to 3,713.70, 5,124.42 and 2,142.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,713.70 : 5,124.42 = 2,142.30 : x
2. Step 2: Convert to fraction form
   3,713.70/5,124.42 = 2,142.30/x
3. Step 3: Cross multiply
   3,713.70x = 5,124.42 × 2,142.30
4. Step 4: Simplify right side
   3,713.70x = 10,978,044.97
5. Step 5: Solve for x
   x = 10,978,044.97/3,713.70
6. Step 6: Final answer
   x = 2,956.09