Finding the Fourth Proportional to 9,947.42, 13,727.79 and 5,471.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.42 : 13,727.79 = 5,471.51 : x
2. Step 2: Convert to fraction form
   9,947.42/13,727.79 = 5,471.51/x
3. Step 3: Cross multiply
   9,947.42x = 13,727.79 × 5,471.51
4. Step 4: Simplify right side
   9,947.42x = 75,111,740.26
5. Step 5: Solve for x
   x = 75,111,740.26/9,947.42
6. Step 6: Final answer
   x = 7,550.88