Finding the Fourth Proportional to 21,617.82, 29,821.24 and 17,589.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,617.82 : 29,821.24 = 17,589.15 : x
2. Step 2: Convert to fraction form
   21,617.82/29,821.24 = 17,589.15/x
3. Step 3: Cross multiply
   21,617.82x = 29,821.24 × 17,589.15
4. Step 4: Simplify right side
   21,617.82x = 524,530,302.02
5. Step 5: Solve for x
   x = 524,530,302.02/21,617.82
6. Step 6: Final answer
   x = 24,263.79