Finding the Fourth Proportional to 23,081.91, 31,847.90 and 14,128.71

Step by Step Solution

1. Step 1: Write the proportion equation
   23,081.91 : 31,847.90 = 14,128.71 : x
2. Step 2: Convert to fraction form
   23,081.91/31,847.90 = 14,128.71/x
3. Step 3: Cross multiply
   23,081.91x = 31,847.90 × 14,128.71
4. Step 4: Simplify right side
   23,081.91x = 449,969,672.57
5. Step 5: Solve for x
   x = 449,969,672.57/23,081.91
6. Step 6: Final answer
   x = 19,494.47