Finding the Fourth Proportional to 4,815.82, 7,221.18 and 2,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,815.82 : 7,221.18 = 2,216.50 : x
2. Step 2: Convert to fraction form
   4,815.82/7,221.18 = 2,216.50/x
3. Step 3: Cross multiply
   4,815.82x = 7,221.18 × 2,216.50
4. Step 4: Simplify right side
   4,815.82x = 16,005,745.47
5. Step 5: Solve for x
   x = 16,005,745.47/4,815.82
6. Step 6: Final answer
   x = 3,323.58