Finding the Fourth Proportional to 21,821.54, 30,105.69 and 14,736.74

Step by Step Solution

1. Step 1: Write the proportion equation
   21,821.54 : 30,105.69 = 14,736.74 : x
2. Step 2: Convert to fraction form
   21,821.54/30,105.69 = 14,736.74/x
3. Step 3: Cross multiply
   21,821.54x = 30,105.69 × 14,736.74
4. Step 4: Simplify right side
   21,821.54x = 443,659,726.05
5. Step 5: Solve for x
   x = 443,659,726.05/21,821.54
6. Step 6: Final answer
   x = 20,331.27