Finding the Fourth Proportional to 7,078.69, 9,768.59 and 3,934.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,078.69 : 9,768.59 = 3,934.88 : x
2. Step 2: Convert to fraction form
   7,078.69/9,768.59 = 3,934.88/x
3. Step 3: Cross multiply
   7,078.69x = 9,768.59 × 3,934.88
4. Step 4: Simplify right side
   7,078.69x = 38,438,229.42
5. Step 5: Solve for x
   x = 38,438,229.42/7,078.69
6. Step 6: Final answer
   x = 5,430.13