Finding the Fourth Proportional to 22,471.27, 31,010.33 and 12,399.71

Step by Step Solution

1. Step 1: Write the proportion equation
   22,471.27 : 31,010.33 = 12,399.71 : x
2. Step 2: Convert to fraction form
   22,471.27/31,010.33 = 12,399.71/x
3. Step 3: Cross multiply
   22,471.27x = 31,010.33 × 12,399.71
4. Step 4: Simplify right side
   22,471.27x = 384,519,099.00
5. Step 5: Solve for x
   x = 384,519,099.00/22,471.27
6. Step 6: Final answer
   x = 17,111.59