Finding the Fourth Proportional to 7,853.10, 10,839.81 and 5,028.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,853.10 : 10,839.81 = 5,028.09 : x
2. Step 2: Convert to fraction form
   7,853.10/10,839.81 = 5,028.09/x
3. Step 3: Cross multiply
   7,853.10x = 10,839.81 × 5,028.09
4. Step 4: Simplify right side
   7,853.10x = 54,503,493.33
5. Step 5: Solve for x
   x = 54,503,493.33/7,853.10
6. Step 6: Final answer
   x = 6,940.38