Finding the Fourth Proportional to 3,513.50, 5,271.97 and 2,196.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,513.50 : 5,271.97 = 2,196.91 : x
2. Step 2: Convert to fraction form
   3,513.50/5,271.97 = 2,196.91/x
3. Step 3: Cross multiply
   3,513.50x = 5,271.97 × 2,196.91
4. Step 4: Simplify right side
   3,513.50x = 11,582,043.61
5. Step 5: Solve for x
   x = 11,582,043.61/3,513.50
6. Step 6: Final answer
   x = 3,296.44