Finding the Fourth Proportional to 5,076.64, 7,007.88 and 3,679.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,076.64 : 7,007.88 = 3,679.12 : x
2. Step 2: Convert to fraction form
   5,076.64/7,007.88 = 3,679.12/x
3. Step 3: Cross multiply
   5,076.64x = 7,007.88 × 3,679.12
4. Step 4: Simplify right side
   5,076.64x = 25,782,831.47
5. Step 5: Solve for x
   x = 25,782,831.47/5,076.64
6. Step 6: Final answer
   x = 5,078.72