Finding the Fourth Proportional to 7,078.50, 9,768.53 and 3,934.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,078.50 : 9,768.53 = 3,934.89 : x
2. Step 2: Convert to fraction form
   7,078.50/9,768.53 = 3,934.89/x
3. Step 3: Cross multiply
   7,078.50x = 9,768.53 × 3,934.89
4. Step 4: Simplify right side
   7,078.50x = 38,438,100.85
5. Step 5: Solve for x
   x = 38,438,100.85/7,078.50
6. Step 6: Final answer
   x = 5,430.26