Finding the Fourth Proportional to 7,078.03, 9,767.31 and 3,934.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,078.03 : 9,767.31 = 3,934.15 : x
2. Step 2: Convert to fraction form
   7,078.03/9,767.31 = 3,934.15/x
3. Step 3: Cross multiply
   7,078.03x = 9,767.31 × 3,934.15
4. Step 4: Simplify right side
   7,078.03x = 38,426,062.64
5. Step 5: Solve for x
   x = 38,426,062.64/7,078.03
6. Step 6: Final answer
   x = 5,428.92