Finding the Fourth Proportional to 30,436.72, 42,002.42 and 17,007.82

Step by Step Solution

1. Step 1: Write the proportion equation
   30,436.72 : 42,002.42 = 17,007.82 : x
2. Step 2: Convert to fraction form
   30,436.72/42,002.42 = 17,007.82/x
3. Step 3: Cross multiply
   30,436.72x = 42,002.42 × 17,007.82
4. Step 4: Simplify right side
   30,436.72x = 714,369,408.88
5. Step 5: Solve for x
   x = 714,369,408.88/30,436.72
6. Step 6: Final answer
   x = 23,470.65