Finding the Fourth Proportional to 9,947.91, 13,727.76 and 5,471.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.91 : 13,727.76 = 5,471.38 : x
2. Step 2: Convert to fraction form
   9,947.91/13,727.76 = 5,471.38/x
3. Step 3: Cross multiply
   9,947.91x = 13,727.76 × 5,471.38
4. Step 4: Simplify right side
   9,947.91x = 75,109,722.87
5. Step 5: Solve for x
   x = 75,109,722.87/9,947.91
6. Step 6: Final answer
   x = 7,550.30