Finding the Fourth Proportional to 12,481.69, 17,224.63 and 7,449.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,481.69 : 17,224.63 = 7,449.16 : x
2. Step 2: Convert to fraction form
   12,481.69/17,224.63 = 7,449.16/x
3. Step 3: Cross multiply
   12,481.69x = 17,224.63 × 7,449.16
4. Step 4: Simplify right side
   12,481.69x = 128,309,024.81
5. Step 5: Solve for x
   x = 128,309,024.81/12,481.69
6. Step 6: Final answer
   x = 10,279.78