Finding the Fourth Proportional to 22,145.82, 30,565.17 and 13,198.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,145.82 : 30,565.17 = 13,198.50 : x
2. Step 2: Convert to fraction form
   22,145.82/30,565.17 = 13,198.50/x
3. Step 3: Cross multiply
   22,145.82x = 30,565.17 × 13,198.50
4. Step 4: Simplify right side
   22,145.82x = 403,414,396.25
5. Step 5: Solve for x
   x = 403,414,396.25/22,145.82
6. Step 6: Final answer
   x = 18,216.28