Finding the Fourth Proportional to 3,947.69, 5,447.22 and 2,269.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.69 : 5,447.22 = 2,269.16 : x
2. Step 2: Convert to fraction form
   3,947.69/5,447.22 = 2,269.16/x
3. Step 3: Cross multiply
   3,947.69x = 5,447.22 × 2,269.16
4. Step 4: Simplify right side
   3,947.69x = 12,360,648.20
5. Step 5: Solve for x
   x = 12,360,648.20/3,947.69
6. Step 6: Final answer
   x = 3,131.11