Finding the Fourth Proportional to 21,760.96, 30,038.88 and 16,456.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,760.96 : 30,038.88 = 16,456.96 : x
2. Step 2: Convert to fraction form
   21,760.96/30,038.88 = 16,456.96/x
3. Step 3: Cross multiply
   21,760.96x = 30,038.88 × 16,456.96
4. Step 4: Simplify right side
   21,760.96x = 494,348,646.60
5. Step 5: Solve for x
   x = 494,348,646.60/21,760.96
6. Step 6: Final answer
   x = 22,717.23