Finding the Fourth Proportional to 3,656.43, 5,486.01 and 2,196.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,656.43 : 5,486.01 = 2,196.63 : x
2. Step 2: Convert to fraction form
   3,656.43/5,486.01 = 2,196.63/x
3. Step 3: Cross multiply
   3,656.43x = 5,486.01 × 2,196.63
4. Step 4: Simplify right side
   3,656.43x = 12,050,734.15
5. Step 5: Solve for x
   x = 12,050,734.15/3,656.43
6. Step 6: Final answer
   x = 3,295.77