Finding the Fourth Proportional to 22,589, 31,172.76 and 12,517.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,589 : 31,172.76 = 12,517.48 : x
2. Step 2: Convert to fraction form
   22,589/31,172.76 = 12,517.48/x
3. Step 3: Cross multiply
   22,589x = 31,172.76 × 12,517.48
4. Step 4: Simplify right side
   22,589x = 390,204,399.84
5. Step 5: Solve for x
   x = 390,204,399.84/22,589
6. Step 6: Final answer
   x = 17,274.09