Finding the Fourth Proportional to 7,067.36, 10,581.60 and 5,330.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,067.36 : 10,581.60 = 5,330.72 : x
2. Step 2: Convert to fraction form
   7,067.36/10,581.60 = 5,330.72/x
3. Step 3: Cross multiply
   7,067.36x = 10,581.60 × 5,330.72
4. Step 4: Simplify right side
   7,067.36x = 56,407,546.75
5. Step 5: Solve for x
   x = 56,407,546.75/7,067.36
6. Step 6: Final answer
   x = 7,981.42