Finding the Fourth Proportional to 22,559.59, 31,135.82 and 13,608.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,559.59 : 31,135.82 = 13,608.38 : x
2. Step 2: Convert to fraction form
   22,559.59/31,135.82 = 13,608.38/x
3. Step 3: Cross multiply
   22,559.59x = 31,135.82 × 13,608.38
4. Step 4: Simplify right side
   22,559.59x = 423,708,030.67
5. Step 5: Solve for x
   x = 423,708,030.67/22,559.59
6. Step 6: Final answer
   x = 18,781.73