Finding the Fourth Proportional to 22,335.82, 30,821.25 and 12,904.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,335.82 : 30,821.25 = 12,904.18 : x
2. Step 2: Convert to fraction form
   22,335.82/30,821.25 = 12,904.18/x
3. Step 3: Cross multiply
   22,335.82x = 30,821.25 × 12,904.18
4. Step 4: Simplify right side
   22,335.82x = 397,722,957.83
5. Step 5: Solve for x
   x = 397,722,957.83/22,335.82
6. Step 6: Final answer
   x = 17,806.51