Finding the Fourth Proportional to 3,969.69, 5,477.92 and 2,201.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969.69 : 5,477.92 = 2,201.19 : x
2. Step 2: Convert to fraction form
   3,969.69/5,477.92 = 2,201.19/x
3. Step 3: Cross multiply
   3,969.69x = 5,477.92 × 2,201.19
4. Step 4: Simplify right side
   3,969.69x = 12,057,942.72
5. Step 5: Solve for x
   x = 12,057,942.72/3,969.69
6. Step 6: Final answer
   x = 3,037.50