Finding the Fourth Proportional to 3,196.72, 4,405.35 and 2,664.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.72 : 4,405.35 = 2,664.55 : x
2. Step 2: Convert to fraction form
   3,196.72/4,405.35 = 2,664.55/x
3. Step 3: Cross multiply
   3,196.72x = 4,405.35 × 2,664.55
4. Step 4: Simplify right side
   3,196.72x = 11,738,275.34
5. Step 5: Solve for x
   x = 11,738,275.34/3,196.72
6. Step 6: Final answer
   x = 3,671.97