Finding the Fourth Proportional to 12,717.68, 17,549.88 and 7,412.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,717.68 : 17,549.88 = 7,412.72 : x
2. Step 2: Convert to fraction form
   12,717.68/17,549.88 = 7,412.72/x
3. Step 3: Cross multiply
   12,717.68x = 17,549.88 × 7,412.72
4. Step 4: Simplify right side
   12,717.68x = 130,092,346.47
5. Step 5: Solve for x
   x = 130,092,346.47/12,717.68
6. Step 6: Final answer
   x = 10,229.25