Finding the Fourth Proportional to 30,716.32, 42,387.60 and 17,288.32

Step by Step Solution

1. Step 1: Write the proportion equation
   30,716.32 : 42,387.60 = 17,288.32 : x
2. Step 2: Convert to fraction form
   30,716.32/42,387.60 = 17,288.32/x
3. Step 3: Cross multiply
   30,716.32x = 42,387.60 × 17,288.32
4. Step 4: Simplify right side
   30,716.32x = 732,810,392.83
5. Step 5: Solve for x
   x = 732,810,392.83/30,716.32
6. Step 6: Final answer
   x = 23,857.36