Finding the Fourth Proportional to 8,007.20, 11,054.72 and 5,179.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,007.20 : 11,054.72 = 5,179.52 : x
2. Step 2: Convert to fraction form
   8,007.20/11,054.72 = 5,179.52/x
3. Step 3: Cross multiply
   8,007.20x = 11,054.72 × 5,179.52
4. Step 4: Simplify right side
   8,007.20x = 57,258,143.33
5. Step 5: Solve for x
   x = 57,258,143.33/8,007.20
6. Step 6: Final answer
   x = 7,150.83