Finding the Fourth Proportional to 7,144.24, 9,856.76 and 4,628.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,144.24 : 9,856.76 = 4,628.28 : x
2. Step 2: Convert to fraction form
   7,144.24/9,856.76 = 4,628.28/x
3. Step 3: Cross multiply
   7,144.24x = 9,856.76 × 4,628.28
4. Step 4: Simplify right side
   7,144.24x = 45,619,870.32
5. Step 5: Solve for x
   x = 45,619,870.32/7,144.24
6. Step 6: Final answer
   x = 6,385.54