Finding the Fourth Proportional to 12,440.96, 17,165.76 and 7,404.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,440.96 : 17,165.76 = 7,404.80 : x
2. Step 2: Convert to fraction form
   12,440.96/17,165.76 = 7,404.80/x
3. Step 3: Cross multiply
   12,440.96x = 17,165.76 × 7,404.80
4. Step 4: Simplify right side
   12,440.96x = 127,109,019.65
5. Step 5: Solve for x
   x = 127,109,019.65/12,440.96
6. Step 6: Final answer
   x = 10,216.98