Finding the Fourth Proportional to 22,731.75, 31,369.59 and 12,659.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,731.75 : 31,369.59 = 12,659.60 : x
2. Step 2: Convert to fraction form
   22,731.75/31,369.59 = 12,659.60/x
3. Step 3: Cross multiply
   22,731.75x = 31,369.59 × 12,659.60
4. Step 4: Simplify right side
   22,731.75x = 397,126,304.72
5. Step 5: Solve for x
   x = 397,126,304.72/22,731.75
6. Step 6: Final answer
   x = 17,470.12