Finding the Fourth Proportional to 22,659.59, 31,275.24 and 12,591.49

Step by Step Solution

1. Step 1: Write the proportion equation
   22,659.59 : 31,275.24 = 12,591.49 : x
2. Step 2: Convert to fraction form
   22,659.59/31,275.24 = 12,591.49/x
3. Step 3: Cross multiply
   22,659.59x = 31,275.24 × 12,591.49
4. Step 4: Simplify right side
   22,659.59x = 393,801,871.71
5. Step 5: Solve for x
   x = 393,801,871.71/22,659.59
6. Step 6: Final answer
   x = 17,379.04