Finding the Fourth Proportional to 9,948.75, 13,728.38 and 5,472.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,948.75 : 13,728.38 = 5,472.69 : x
2. Step 2: Convert to fraction form
   9,948.75/13,728.38 = 5,472.69/x
3. Step 3: Cross multiply
   9,948.75x = 13,728.38 × 5,472.69
4. Step 4: Simplify right side
   9,948.75x = 75,131,140.58
5. Step 5: Solve for x
   x = 75,131,140.58/9,948.75
6. Step 6: Final answer
   x = 7,551.82