Finding the Fourth Proportional to 21,793.62, 30,081.63 and 12,844.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,793.62 : 30,081.63 = 12,844.02 : x
2. Step 2: Convert to fraction form
   21,793.62/30,081.63 = 12,844.02/x
3. Step 3: Cross multiply
   21,793.62x = 30,081.63 × 12,844.02
4. Step 4: Simplify right side
   21,793.62x = 386,369,057.35
5. Step 5: Solve for x
   x = 386,369,057.35/21,793.62
6. Step 6: Final answer
   x = 17,728.54