Finding the Fourth Proportional to 22,147.86, 30,567.55 and 13,200.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,147.86 : 30,567.55 = 13,200.55 : x
2. Step 2: Convert to fraction form
   22,147.86/30,567.55 = 13,200.55/x
3. Step 3: Cross multiply
   22,147.86x = 30,567.55 × 13,200.55
4. Step 4: Simplify right side
   22,147.86x = 403,508,329.73
5. Step 5: Solve for x
   x = 403,508,329.73/22,147.86
6. Step 6: Final answer
   x = 18,218.84