Finding the Fourth Proportional to 12,429.92, 17,130.75 and 9,067.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429.92 : 17,130.75 = 9,067.34 : x
2. Step 2: Convert to fraction form
   12,429.92/17,130.75 = 9,067.34/x
3. Step 3: Cross multiply
   12,429.92x = 17,130.75 × 9,067.34
4. Step 4: Simplify right side
   12,429.92x = 155,330,334.71
5. Step 5: Solve for x
   x = 155,330,334.71/12,429.92
6. Step 6: Final answer
   x = 12,496.49