Finding the Fourth Proportional to 30,715.38, 42,383.79 and 17,291.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,715.38 : 42,383.79 = 17,291.25 : x
2. Step 2: Convert to fraction form
   30,715.38/42,383.79 = 17,291.25/x
3. Step 3: Cross multiply
   30,715.38x = 42,383.79 × 17,291.25
4. Step 4: Simplify right side
   30,715.38x = 732,868,708.84
5. Step 5: Solve for x
   x = 732,868,708.84/30,715.38
6. Step 6: Final answer
   x = 23,859.99