Finding the Fourth Proportional to 31,379.57, 43,301.75 and 18,632.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,379.57 : 43,301.75 = 18,632.10 : x
2. Step 2: Convert to fraction form
   31,379.57/43,301.75 = 18,632.10/x
3. Step 3: Cross multiply
   31,379.57x = 43,301.75 × 18,632.10
4. Step 4: Simplify right side
   31,379.57x = 806,802,350.50
5. Step 5: Solve for x
   x = 806,802,350.50/31,379.57
6. Step 6: Final answer
   x = 25,711.07