Finding the Fourth Proportional to 23,144.71, 31,940.91 and 15,191.59

Step by Step Solution

1. Step 1: Write the proportion equation
   23,144.71 : 31,940.91 = 15,191.59 : x
2. Step 2: Convert to fraction form
   23,144.71/31,940.91 = 15,191.59/x
3. Step 3: Cross multiply
   23,144.71x = 31,940.91 × 15,191.59
4. Step 4: Simplify right side
   23,144.71x = 485,233,208.95
5. Step 5: Solve for x
   x = 485,233,208.95/23,144.71
6. Step 6: Final answer
   x = 20,965.19