Finding the Fourth Proportional to 30,830.10, 42,545.09 and 17,218

Step by Step Solution

1. Step 1: Write the proportion equation
   30,830.10 : 42,545.09 = 17,218 : x
2. Step 2: Convert to fraction form
   30,830.10/42,545.09 = 17,218/x
3. Step 3: Cross multiply
   30,830.10x = 42,545.09 × 17,218
4. Step 4: Simplify right side
   30,830.10x = 732,541,359.62
5. Step 5: Solve for x
   x = 732,541,359.62/30,830.10
6. Step 6: Final answer
   x = 23,760.59