Finding the Fourth Proportional to 21,760.79, 30,046.82 and 16,717.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,760.79 : 30,046.82 = 16,717.05 : x
2. Step 2: Convert to fraction form
   21,760.79/30,046.82 = 16,717.05/x
3. Step 3: Cross multiply
   21,760.79x = 30,046.82 × 16,717.05
4. Step 4: Simplify right side
   21,760.79x = 502,294,108.70
5. Step 5: Solve for x
   x = 502,294,108.70/21,760.79
6. Step 6: Final answer
   x = 23,082.54