Finding the Fourth Proportional to 9,947.75, 13,728.24 and 5,471.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.75 : 13,728.24 = 5,471.84 : x
2. Step 2: Convert to fraction form
   9,947.75/13,728.24 = 5,471.84/x
3. Step 3: Cross multiply
   9,947.75x = 13,728.24 × 5,471.84
4. Step 4: Simplify right side
   9,947.75x = 75,118,732.76
5. Step 5: Solve for x
   x = 75,118,732.76/9,947.75
6. Step 6: Final answer
   x = 7,551.33