Finding the Fourth Proportional to 12,465.96, 17,198.72 and 7,992.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,465.96 : 17,198.72 = 7,992.16 : x
2. Step 2: Convert to fraction form
   12,465.96/17,198.72 = 7,992.16/x
3. Step 3: Cross multiply
   12,465.96x = 17,198.72 × 7,992.16
4. Step 4: Simplify right side
   12,465.96x = 137,454,922.04
5. Step 5: Solve for x
   x = 137,454,922.04/12,465.96
6. Step 6: Final answer
   x = 11,026.42