Finding the Fourth Proportional to 22,856.42, 31,540.89 and 13,296.33

Step by Step Solution

1. Step 1: Write the proportion equation
   22,856.42 : 31,540.89 = 13,296.33 : x
2. Step 2: Convert to fraction form
   22,856.42/31,540.89 = 13,296.33/x
3. Step 3: Cross multiply
   22,856.42x = 31,540.89 × 13,296.33
4. Step 4: Simplify right side
   22,856.42x = 419,378,081.93
5. Step 5: Solve for x
   x = 419,378,081.93/22,856.42
6. Step 6: Final answer
   x = 18,348.37