Finding the Fourth Proportional to 3,947.32, 5,447.34 and 2,268.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.32 : 5,447.34 = 2,268.76 : x
2. Step 2: Convert to fraction form
   3,947.32/5,447.34 = 2,268.76/x
3. Step 3: Cross multiply
   3,947.32x = 5,447.34 × 2,268.76
4. Step 4: Simplify right side
   3,947.32x = 12,358,707.10
5. Step 5: Solve for x
   x = 12,358,707.10/3,947.32
6. Step 6: Final answer
   x = 3,130.91