Finding the Fourth Proportional to 4,931.34, 7,399.17 and 2,158.71

Step by Step Solution

1. Step 1: Write the proportion equation
   4,931.34 : 7,399.17 = 2,158.71 : x
2. Step 2: Convert to fraction form
   4,931.34/7,399.17 = 2,158.71/x
3. Step 3: Cross multiply
   4,931.34x = 7,399.17 × 2,158.71
4. Step 4: Simplify right side
   4,931.34x = 15,972,662.27
5. Step 5: Solve for x
   x = 15,972,662.27/4,931.34
6. Step 6: Final answer
   x = 3,239.01