Finding the Fourth Proportional to 12,824.82, 17,697.76 and 7,159.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,824.82 : 17,697.76 = 7,159.28 : x
2. Step 2: Convert to fraction form
   12,824.82/17,697.76 = 7,159.28/x
3. Step 3: Cross multiply
   12,824.82x = 17,697.76 × 7,159.28
4. Step 4: Simplify right side
   12,824.82x = 126,703,112.83
5. Step 5: Solve for x
   x = 126,703,112.83/12,824.82
6. Step 6: Final answer
   x = 9,879.52