Finding the Fourth Proportional to 9,947.75, 13,728.02 and 5,471.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.75 : 13,728.02 = 5,471.69 : x
2. Step 2: Convert to fraction form
   9,947.75/13,728.02 = 5,471.69/x
3. Step 3: Cross multiply
   9,947.75x = 13,728.02 × 5,471.69
4. Step 4: Simplify right side
   9,947.75x = 75,115,373.76
5. Step 5: Solve for x
   x = 75,115,373.76/9,947.75
6. Step 6: Final answer
   x = 7,551.00