Finding the Fourth Proportional to 21,410.39, 29,521.17 and 17,158.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,410.39 : 29,521.17 = 17,158.04 : x
2. Step 2: Convert to fraction form
   21,410.39/29,521.17 = 17,158.04/x
3. Step 3: Cross multiply
   21,410.39x = 29,521.17 × 17,158.04
4. Step 4: Simplify right side
   21,410.39x = 506,525,390.16
5. Step 5: Solve for x
   x = 506,525,390.16/21,410.39
6. Step 6: Final answer
   x = 23,657.93