Finding the Fourth Proportional to 2,355.02, 3,550.23 and 2,196.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,355.02 : 3,550.23 = 2,196.47 : x
2. Step 2: Convert to fraction form
   2,355.02/3,550.23 = 2,196.47/x
3. Step 3: Cross multiply
   2,355.02x = 3,550.23 × 2,196.47
4. Step 4: Simplify right side
   2,355.02x = 7,797,973.69
5. Step 5: Solve for x
   x = 7,797,973.69/2,355.02
6. Step 6: Final answer
   x = 3,311.21