Finding the Fourth Proportional to 3,969.50, 5,477.91 and 2,201.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969.50 : 5,477.91 = 2,201.38 : x
2. Step 2: Convert to fraction form
   3,969.50/5,477.91 = 2,201.38/x
3. Step 3: Cross multiply
   3,969.50x = 5,477.91 × 2,201.38
4. Step 4: Simplify right side
   3,969.50x = 12,058,961.52
5. Step 5: Solve for x
   x = 12,058,961.52/3,969.50
6. Step 6: Final answer
   x = 3,037.90