Finding the Fourth Proportional to 16,109.25, 22,230.81 and 9,399.49

Step by Step Solution

1. Step 1: Write the proportion equation
   16,109.25 : 22,230.81 = 9,399.49 : x
2. Step 2: Convert to fraction form
   16,109.25/22,230.81 = 9,399.49/x
3. Step 3: Cross multiply
   16,109.25x = 22,230.81 × 9,399.49
4. Step 4: Simplify right side
   16,109.25x = 208,958,229.29
5. Step 5: Solve for x
   x = 208,958,229.29/16,109.25
6. Step 6: Final answer
   x = 12,971.32