Finding the Fourth Proportional to 9,947.36, 13,727.36 and 5,471.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.36 : 13,727.36 = 5,471.12 : x
2. Step 2: Convert to fraction form
   9,947.36/13,727.36 = 5,471.12/x
3. Step 3: Cross multiply
   9,947.36x = 13,727.36 × 5,471.12
4. Step 4: Simplify right side
   9,947.36x = 75,103,978.88
5. Step 5: Solve for x
   x = 75,103,978.88/9,947.36
6. Step 6: Final answer
   x = 7,550.15