Finding the Fourth Proportional to 9,328.07, 12,872.81 and 5,079.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,328.07 : 12,872.81 = 5,079.16 : x
2. Step 2: Convert to fraction form
   9,328.07/12,872.81 = 5,079.16/x
3. Step 3: Cross multiply
   9,328.07x = 12,872.81 × 5,079.16
4. Step 4: Simplify right side
   9,328.07x = 65,383,061.64
5. Step 5: Solve for x
   x = 65,383,061.64/9,328.07
6. Step 6: Final answer
   x = 7,009.28