Finding the Fourth Proportional to 22,538.24, 31,105.38 and 13,590.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,538.24 : 31,105.38 = 13,590.32 : x
2. Step 2: Convert to fraction form
   22,538.24/31,105.38 = 13,590.32/x
3. Step 3: Cross multiply
   22,538.24x = 31,105.38 × 13,590.32
4. Step 4: Simplify right side
   22,538.24x = 422,732,067.92
5. Step 5: Solve for x
   x = 422,732,067.92/22,538.24
6. Step 6: Final answer
   x = 18,756.21