Finding the Fourth Proportional to 7,833.28, 10,807.68 and 5,179.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,833.28 : 10,807.68 = 5,179.72 : x
2. Step 2: Convert to fraction form
   7,833.28/10,807.68 = 5,179.72/x
3. Step 3: Cross multiply
   7,833.28x = 10,807.68 × 5,179.72
4. Step 4: Simplify right side
   7,833.28x = 55,980,756.25
5. Step 5: Solve for x
   x = 55,980,756.25/7,833.28
6. Step 6: Final answer
   x = 7,146.53