Finding the Fourth Proportional to 5,276.88, 7,272.72 and 4,686.48

Step by Step Solution

1. Step 1: Write the proportion equation
   5,276.88 : 7,272.72 = 4,686.48 : x
2. Step 2: Convert to fraction form
   5,276.88/7,272.72 = 4,686.48/x
3. Step 3: Cross multiply
   5,276.88x = 7,272.72 × 4,686.48
4. Step 4: Simplify right side
   5,276.88x = 34,083,456.83
5. Step 5: Solve for x
   x = 34,083,456.83/5,276.88
6. Step 6: Final answer
   x = 6,459.02