Finding the Fourth Proportional to 9,304, 12,839.52 and 5,578.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,304 : 12,839.52 = 5,578.72 : x
2. Step 2: Convert to fraction form
   9,304/12,839.52 = 5,578.72/x
3. Step 3: Cross multiply
   9,304x = 12,839.52 × 5,578.72
4. Step 4: Simplify right side
   9,304x = 71,628,087.01
5. Step 5: Solve for x
   x = 71,628,087.01/9,304
6. Step 6: Final answer
   x = 7,698.63