Finding the Fourth Proportional to 3,671.73, 5,499.18 and 2,207.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,671.73 : 5,499.18 = 2,207.61 : x
2. Step 2: Convert to fraction form
   3,671.73/5,499.18 = 2,207.61/x
3. Step 3: Cross multiply
   3,671.73x = 5,499.18 × 2,207.61
4. Step 4: Simplify right side
   3,671.73x = 12,140,044.76
5. Step 5: Solve for x
   x = 12,140,044.76/3,671.73
6. Step 6: Final answer
   x = 3,306.36