Finding the Fourth Proportional to 5,088.48, 7,021.98 and 2,850.45

Step by Step Solution

1. Step 1: Write the proportion equation
   5,088.48 : 7,021.98 = 2,850.45 : x
2. Step 2: Convert to fraction form
   5,088.48/7,021.98 = 2,850.45/x
3. Step 3: Cross multiply
   5,088.48x = 7,021.98 × 2,850.45
4. Step 4: Simplify right side
   5,088.48x = 20,015,802.89
5. Step 5: Solve for x
   x = 20,015,802.89/5,088.48
6. Step 6: Final answer
   x = 3,933.55