Finding the Fourth Proportional to 5,088.78, 7,021.89 and 2,850.48

Step by Step Solution

1. Step 1: Write the proportion equation
   5,088.78 : 7,021.89 = 2,850.48 : x
2. Step 2: Convert to fraction form
   5,088.78/7,021.89 = 2,850.48/x
3. Step 3: Cross multiply
   5,088.78x = 7,021.89 × 2,850.48
4. Step 4: Simplify right side
   5,088.78x = 20,015,757.01
5. Step 5: Solve for x
   x = 20,015,757.01/5,088.78
6. Step 6: Final answer
   x = 3,933.31