Finding the Fourth Proportional to 7,200.82, 9,932.83 and 5,311.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200.82 : 9,932.83 = 5,311.80 : x
2. Step 2: Convert to fraction form
   7,200.82/9,932.83 = 5,311.80/x
3. Step 3: Cross multiply
   7,200.82x = 9,932.83 × 5,311.80
4. Step 4: Simplify right side
   7,200.82x = 52,761,206.39
5. Step 5: Solve for x
   x = 52,761,206.39/7,200.82
6. Step 6: Final answer
   x = 7,327.11