Finding the Fourth Proportional to 21,843.72, 30,144.56 and 17,069.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,843.72 : 30,144.56 = 17,069.18 : x
2. Step 2: Convert to fraction form
   21,843.72/30,144.56 = 17,069.18/x
3. Step 3: Cross multiply
   21,843.72x = 30,144.56 × 17,069.18
4. Step 4: Simplify right side
   21,843.72x = 514,542,684.59
5. Step 5: Solve for x
   x = 514,542,684.59/21,843.72
6. Step 6: Final answer
   x = 23,555.63