Finding the Fourth Proportional to 22,589.37, 31,172.96 and 12,517.79

Step by Step Solution

1. Step 1: Write the proportion equation
   22,589.37 : 31,172.96 = 12,517.79 : x
2. Step 2: Convert to fraction form
   22,589.37/31,172.96 = 12,517.79/x
3. Step 3: Cross multiply
   22,589.37x = 31,172.96 × 12,517.79
4. Step 4: Simplify right side
   22,589.37x = 390,216,348.50
5. Step 5: Solve for x
   x = 390,216,348.50/22,589.37
6. Step 6: Final answer
   x = 17,274.34