Finding the Fourth Proportional to 9,280.67, 12,809.59 and 5,304.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.67 : 12,809.59 = 5,304.06 : x
2. Step 2: Convert to fraction form
   9,280.67/12,809.59 = 5,304.06/x
3. Step 3: Cross multiply
   9,280.67x = 12,809.59 × 5,304.06
4. Step 4: Simplify right side
   9,280.67x = 67,942,820.68
5. Step 5: Solve for x
   x = 67,942,820.68/9,280.67
6. Step 6: Final answer
   x = 7,320.90