Finding the Fourth Proportional to 22,659.27, 31,269.37 and 12,587.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,659.27 : 31,269.37 = 12,587.31 : x
2. Step 2: Convert to fraction form
   22,659.27/31,269.37 = 12,587.31/x
3. Step 3: Cross multiply
   22,659.27x = 31,269.37 × 12,587.31
4. Step 4: Simplify right side
   22,659.27x = 393,597,253.69
5. Step 5: Solve for x
   x = 393,597,253.69/22,659.27
6. Step 6: Final answer
   x = 17,370.25