Finding the Fourth Proportional to 21,380.39, 29,507.42 and 17,789.00

Step by Step Solution

1. Step 1: Write the proportion equation
   21,380.39 : 29,507.42 = 17,789.00 : x
2. Step 2: Convert to fraction form
   21,380.39/29,507.42 = 17,789.00/x
3. Step 3: Cross multiply
   21,380.39x = 29,507.42 × 17,789.00
4. Step 4: Simplify right side
   21,380.39x = 524,907,391.32
5. Step 5: Solve for x
   x = 524,907,391.32/21,380.39
6. Step 6: Final answer
   x = 24,550.88