Finding the Fourth Proportional to 30,715.33, 42,387.11 and 17,286.68

Step by Step Solution

1. Step 1: Write the proportion equation
   30,715.33 : 42,387.11 = 17,286.68 : x
2. Step 2: Convert to fraction form
   30,715.33/42,387.11 = 17,286.68/x
3. Step 3: Cross multiply
   30,715.33x = 42,387.11 × 17,286.68
4. Step 4: Simplify right side
   30,715.33x = 732,732,108.33
5. Step 5: Solve for x
   x = 732,732,108.33/30,715.33
6. Step 6: Final answer
   x = 23,855.59