Finding the Fourth Proportional to 2,196.18, 3,253.16 and 2,171.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.18 : 3,253.16 = 2,171.61 : x
2. Step 2: Convert to fraction form
   2,196.18/3,253.16 = 2,171.61/x
3. Step 3: Cross multiply
   2,196.18x = 3,253.16 × 2,171.61
4. Step 4: Simplify right side
   2,196.18x = 7,064,600.22
5. Step 5: Solve for x
   x = 7,064,600.22/2,196.18
6. Step 6: Final answer
   x = 3,216.77