Finding the Fourth Proportional to 30,716.92, 42,389.43 and 17,288.37

Step by Step Solution

1. Step 1: Write the proportion equation
   30,716.92 : 42,389.43 = 17,288.37 : x
2. Step 2: Convert to fraction form
   30,716.92/42,389.43 = 17,288.37/x
3. Step 3: Cross multiply
   30,716.92x = 42,389.43 × 17,288.37
4. Step 4: Simplify right side
   30,716.92x = 732,844,085.10
5. Step 5: Solve for x
   x = 732,844,085.10/30,716.92
6. Step 6: Final answer
   x = 23,857.99