Finding the Fourth Proportional to 12,489.32, 17,233.98 and 7,183.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,489.32 : 17,233.98 = 7,183.10 : x
2. Step 2: Convert to fraction form
   12,489.32/17,233.98 = 7,183.10/x
3. Step 3: Cross multiply
   12,489.32x = 17,233.98 × 7,183.10
4. Step 4: Simplify right side
   12,489.32x = 123,793,401.74
5. Step 5: Solve for x
   x = 123,793,401.74/12,489.32
6. Step 6: Final answer
   x = 9,911.94