Finding the Fourth Proportional to 3,969.93, 5,478.41 and 2,201.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969.93 : 5,478.41 = 2,201.50 : x
2. Step 2: Convert to fraction form
   3,969.93/5,478.41 = 2,201.50/x
3. Step 3: Cross multiply
   3,969.93x = 5,478.41 × 2,201.50
4. Step 4: Simplify right side
   3,969.93x = 12,060,692.22
5. Step 5: Solve for x
   x = 12,060,692.22/3,969.93
6. Step 6: Final answer
   x = 3,038.01