Finding the Fourth Proportional to 7,134.72, 9,845.49 and 3,947.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,134.72 : 9,845.49 = 3,947.82 : x
2. Step 2: Convert to fraction form
   7,134.72/9,845.49 = 3,947.82/x
3. Step 3: Cross multiply
   7,134.72x = 9,845.49 × 3,947.82
4. Step 4: Simplify right side
   7,134.72x = 38,868,222.33
5. Step 5: Solve for x
   x = 38,868,222.33/7,134.72
6. Step 6: Final answer
   x = 5,447.76