Finding the Fourth Proportional to 22,413.06, 30,928.80 and 12,339.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,413.06 : 30,928.80 = 12,339.59 : x
2. Step 2: Convert to fraction form
   22,413.06/30,928.80 = 12,339.59/x
3. Step 3: Cross multiply
   22,413.06x = 30,928.80 × 12,339.59
4. Step 4: Simplify right side
   22,413.06x = 381,648,711.19
5. Step 5: Solve for x
   x = 381,648,711.19/22,413.06
6. Step 6: Final answer
   x = 17,027.96