Finding the Fourth Proportional to 22,331.95, 30,818.18 and 12,261.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,331.95 : 30,818.18 = 12,261.42 : x
2. Step 2: Convert to fraction form
   22,331.95/30,818.18 = 12,261.42/x
3. Step 3: Cross multiply
   22,331.95x = 30,818.18 × 12,261.42
4. Step 4: Simplify right side
   22,331.95x = 377,874,587.31
5. Step 5: Solve for x
   x = 377,874,587.31/22,331.95
6. Step 6: Final answer
   x = 16,920.81