Finding the Fourth Proportional to 22,656.15, 31,269.38 and 13,229.37

Step by Step Solution

1. Step 1: Write the proportion equation
   22,656.15 : 31,269.38 = 13,229.37 : x
2. Step 2: Convert to fraction form
   22,656.15/31,269.38 = 13,229.37/x
3. Step 3: Cross multiply
   22,656.15x = 31,269.38 × 13,229.37
4. Step 4: Simplify right side
   22,656.15x = 413,674,131.54
5. Step 5: Solve for x
   x = 413,674,131.54/22,656.15
6. Step 6: Final answer
   x = 18,258.80