Finding the Fourth Proportional to 5,275.99, 7,919.07 and 3,885.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,275.99 : 7,919.07 = 3,885.42 : x
2. Step 2: Convert to fraction form
   5,275.99/7,919.07 = 3,885.42/x
3. Step 3: Cross multiply
   5,275.99x = 7,919.07 × 3,885.42
4. Step 4: Simplify right side
   5,275.99x = 30,768,883.54
5. Step 5: Solve for x
   x = 30,768,883.54/5,275.99
6. Step 6: Final answer
   x = 5,831.87