Finding the Fourth Proportional to 12,617.76, 17,413.72 and 7,028.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,617.76 : 17,413.72 = 7,028.76 : x
2. Step 2: Convert to fraction form
   12,617.76/17,413.72 = 7,028.76/x
3. Step 3: Cross multiply
   12,617.76x = 17,413.72 × 7,028.76
4. Step 4: Simplify right side
   12,617.76x = 122,396,858.59
5. Step 5: Solve for x
   x = 122,396,858.59/12,617.76
6. Step 6: Final answer
   x = 9,700.36