Finding the Fourth Proportional to 12,992.88, 17,930.04 and 7,404

Step by Step Solution

1. Step 1: Write the proportion equation
   12,992.88 : 17,930.04 = 7,404 : x
2. Step 2: Convert to fraction form
   12,992.88/17,930.04 = 7,404/x
3. Step 3: Cross multiply
   12,992.88x = 17,930.04 × 7,404
4. Step 4: Simplify right side
   12,992.88x = 132,754,016.16
5. Step 5: Solve for x
   x = 132,754,016.16/12,992.88
6. Step 6: Final answer
   x = 10,217.44