Finding the Fourth Proportional to 22,384.71, 30,888.69 and 12,822.77

Step by Step Solution

1. Step 1: Write the proportion equation
   22,384.71 : 30,888.69 = 12,822.77 : x
2. Step 2: Convert to fraction form
   22,384.71/30,888.69 = 12,822.77/x
3. Step 3: Cross multiply
   22,384.71x = 30,888.69 × 12,822.77
4. Step 4: Simplify right side
   22,384.71x = 396,078,413.03
5. Step 5: Solve for x
   x = 396,078,413.03/22,384.71
6. Step 6: Final answer
   x = 17,694.15