Finding the Fourth Proportional to 3,947.50, 5,447.85 and 2,269.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.50 : 5,447.85 = 2,269.32 : x
2. Step 2: Convert to fraction form
   3,947.50/5,447.85 = 2,269.32/x
3. Step 3: Cross multiply
   3,947.50x = 5,447.85 × 2,269.32
4. Step 4: Simplify right side
   3,947.50x = 12,362,886.02
5. Step 5: Solve for x
   x = 12,362,886.02/3,947.50
6. Step 6: Final answer
   x = 3,131.83