Finding the Fourth Proportional to 3,661.72, 5,493.98 and 2,201.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,661.72 : 5,493.98 = 2,201.88 : x
2. Step 2: Convert to fraction form
   3,661.72/5,493.98 = 2,201.88/x
3. Step 3: Cross multiply
   3,661.72x = 5,493.98 × 2,201.88
4. Step 4: Simplify right side
   3,661.72x = 12,097,084.68
5. Step 5: Solve for x
   x = 12,097,084.68/3,661.72
6. Step 6: Final answer
   x = 3,303.66