Finding the Fourth Proportional to 12,402.62, 18,629.37 and 8,192.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,402.62 : 18,629.37 = 8,192.09 : x
2. Step 2: Convert to fraction form
   12,402.62/18,629.37 = 8,192.09/x
3. Step 3: Cross multiply
   12,402.62x = 18,629.37 × 8,192.09
4. Step 4: Simplify right side
   12,402.62x = 152,613,382.54
5. Step 5: Solve for x
   x = 152,613,382.54/12,402.62
6. Step 6: Final answer
   x = 12,304.94