Finding the Fourth Proportional to 23,158.71, 31,959.61 and 14,211.15

Step by Step Solution

1. Step 1: Write the proportion equation
   23,158.71 : 31,959.61 = 14,211.15 : x
2. Step 2: Convert to fraction form
   23,158.71/31,959.61 = 14,211.15/x
3. Step 3: Cross multiply
   23,158.71x = 31,959.61 × 14,211.15
4. Step 4: Simplify right side
   23,158.71x = 454,182,740.60
5. Step 5: Solve for x
   x = 454,182,740.60/23,158.71
6. Step 6: Final answer
   x = 19,611.75