Finding the Fourth Proportional to 12,789.59, 17,649.67 and 7,413.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,789.59 : 17,649.67 = 7,413.07 : x
2. Step 2: Convert to fraction form
   12,789.59/17,649.67 = 7,413.07/x
3. Step 3: Cross multiply
   12,789.59x = 17,649.67 × 7,413.07
4. Step 4: Simplify right side
   12,789.59x = 130,838,113.87
5. Step 5: Solve for x
   x = 130,838,113.87/12,789.59
6. Step 6: Final answer
   x = 10,230.05