Finding the Fourth Proportional to 12,728.88, 17,562.96 and 7,424.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,728.88 : 17,562.96 = 7,424.46 : x
2. Step 2: Convert to fraction form
   12,728.88/17,562.96 = 7,424.46/x
3. Step 3: Cross multiply
   12,728.88x = 17,562.96 × 7,424.46
4. Step 4: Simplify right side
   12,728.88x = 130,395,494.00
5. Step 5: Solve for x
   x = 130,395,494.00/12,728.88
6. Step 6: Final answer
   x = 10,244.07