Finding the Fourth Proportional to 16,238.78, 22,406.29 and 9,163.83

Step by Step Solution

1. Step 1: Write the proportion equation
   16,238.78 : 22,406.29 = 9,163.83 : x
2. Step 2: Convert to fraction form
   16,238.78/22,406.29 = 9,163.83/x
3. Step 3: Cross multiply
   16,238.78x = 22,406.29 × 9,163.83
4. Step 4: Simplify right side
   16,238.78x = 205,327,493.60
5. Step 5: Solve for x
   x = 205,327,493.60/16,238.78
6. Step 6: Final answer
   x = 12,644.27