Finding the Fourth Proportional to 16,238.16, 22,406.76 and 9,163.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,238.16 : 22,406.76 = 9,163.89 : x
2. Step 2: Convert to fraction form
   16,238.16/22,406.76 = 9,163.89/x
3. Step 3: Cross multiply
   16,238.16x = 22,406.76 × 9,163.89
4. Step 4: Simplify right side
   16,238.16x = 205,333,083.90
5. Step 5: Solve for x
   x = 205,333,083.90/16,238.16
6. Step 6: Final answer
   x = 12,645.10