Finding the Fourth Proportional to 12,728.54, 17,565.41 and 7,063.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,728.54 : 17,565.41 = 7,063.15 : x
2. Step 2: Convert to fraction form
   12,728.54/17,565.41 = 7,063.15/x
3. Step 3: Cross multiply
   12,728.54x = 17,565.41 × 7,063.15
4. Step 4: Simplify right side
   12,728.54x = 124,067,092.59
5. Step 5: Solve for x
   x = 124,067,092.59/12,728.54
6. Step 6: Final answer
   x = 9,747.16