Finding the Fourth Proportional to 22,158.52, 30,578.01 and 13,201.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,158.52 : 30,578.01 = 13,201.39 : x
2. Step 2: Convert to fraction form
   22,158.52/30,578.01 = 13,201.39/x
3. Step 3: Cross multiply
   22,158.52x = 30,578.01 × 13,201.39
4. Step 4: Simplify right side
   22,158.52x = 403,672,235.43
5. Step 5: Solve for x
   x = 403,672,235.43/22,158.52
6. Step 6: Final answer
   x = 18,217.47