Finding the Fourth Proportional to 22,540.50, 31,105.89 and 12,604.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,540.50 : 31,105.89 = 12,604.50 : x
2. Step 2: Convert to fraction form
   22,540.50/31,105.89 = 12,604.50/x
3. Step 3: Cross multiply
   22,540.50x = 31,105.89 × 12,604.50
4. Step 4: Simplify right side
   22,540.50x = 392,074,190.51
5. Step 5: Solve for x
   x = 392,074,190.51/22,540.50
6. Step 6: Final answer
   x = 17,394.21