Finding the Fourth Proportional to 16,105.98, 22,221.21 and 9,299.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,105.98 : 22,221.21 = 9,299.12 : x
2. Step 2: Convert to fraction form
   16,105.98/22,221.21 = 9,299.12/x
3. Step 3: Cross multiply
   16,105.98x = 22,221.21 × 9,299.12
4. Step 4: Simplify right side
   16,105.98x = 206,637,622.10
5. Step 5: Solve for x
   x = 206,637,622.10/16,105.98
6. Step 6: Final answer
   x = 12,829.87