Finding the Fourth Proportional to 16,222.31, 22,386.35 and 9,149.39

Step by Step Solution

1. Step 1: Write the proportion equation
   16,222.31 : 22,386.35 = 9,149.39 : x
2. Step 2: Convert to fraction form
   16,222.31/22,386.35 = 9,149.39/x
3. Step 3: Cross multiply
   16,222.31x = 22,386.35 × 9,149.39
4. Step 4: Simplify right side
   16,222.31x = 204,821,401.08
5. Step 5: Solve for x
   x = 204,821,401.08/16,222.31
6. Step 6: Final answer
   x = 12,625.91