Finding the Fourth Proportional to 9,948.38, 13,728.82 and 5,472.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,948.38 : 13,728.82 = 5,472.42 : x
2. Step 2: Convert to fraction form
   9,948.38/13,728.82 = 5,472.42/x
3. Step 3: Cross multiply
   9,948.38x = 13,728.82 × 5,472.42
4. Step 4: Simplify right side
   9,948.38x = 75,129,869.14
5. Step 5: Solve for x
   x = 75,129,869.14/9,948.38
6. Step 6: Final answer
   x = 7,551.97