Finding the Fourth Proportional to 3,196.76, 4,407.09 and 2,486.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.76 : 4,407.09 = 2,486.39 : x
2. Step 2: Convert to fraction form
   3,196.76/4,407.09 = 2,486.39/x
3. Step 3: Cross multiply
   3,196.76x = 4,407.09 × 2,486.39
4. Step 4: Simplify right side
   3,196.76x = 10,957,744.51
5. Step 5: Solve for x
   x = 10,957,744.51/3,196.76
6. Step 6: Final answer
   x = 3,427.77