Finding the Fourth Proportional to 7,919.82, 10,924.56 and 5,231.05

Step by Step Solution

1. Step 1: Write the proportion equation
   7,919.82 : 10,924.56 = 5,231.05 : x
2. Step 2: Convert to fraction form
   7,919.82/10,924.56 = 5,231.05/x
3. Step 3: Cross multiply
   7,919.82x = 10,924.56 × 5,231.05
4. Step 4: Simplify right side
   7,919.82x = 57,146,892.28
5. Step 5: Solve for x
   x = 57,146,892.28/7,919.82
6. Step 6: Final answer
   x = 7,215.68