Finding the Fourth Proportional to 30,828.18, 42,542.72 and 17,403.80

Step by Step Solution

1. Step 1: Write the proportion equation
   30,828.18 : 42,542.72 = 17,403.80 : x
2. Step 2: Convert to fraction form
   30,828.18/42,542.72 = 17,403.80/x
3. Step 3: Cross multiply
   30,828.18x = 42,542.72 × 17,403.80
4. Step 4: Simplify right side
   30,828.18x = 740,404,690.60
5. Step 5: Solve for x
   x = 740,404,690.60/30,828.18
6. Step 6: Final answer
   x = 24,017.14