Finding the Fourth Proportional to 12,440.14, 17,183.82 and 9,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,440.14 : 17,183.82 = 9,216.50 : x
2. Step 2: Convert to fraction form
   12,440.14/17,183.82 = 9,216.50/x
3. Step 3: Cross multiply
   12,440.14x = 17,183.82 × 9,216.50
4. Step 4: Simplify right side
   12,440.14x = 158,374,670.49
5. Step 5: Solve for x
   x = 158,374,670.49/12,440.14
6. Step 6: Final answer
   x = 12,730.94