Finding the Fourth Proportional to 22,659.60, 31,269.60 and 13,227.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,659.60 : 31,269.60 = 13,227.60 : x
2. Step 2: Convert to fraction form
   22,659.60/31,269.60 = 13,227.60/x
3. Step 3: Cross multiply
   22,659.60x = 31,269.60 × 13,227.60
4. Step 4: Simplify right side
   22,659.60x = 413,621,760.96
5. Step 5: Solve for x
   x = 413,621,760.96/22,659.60
6. Step 6: Final answer
   x = 18,253.71