Finding the Fourth Proportional to 7,019.88, 9,687.31 and 3,876

Step by Step Solution

1. Step 1: Write the proportion equation
   7,019.88 : 9,687.31 = 3,876 : x
2. Step 2: Convert to fraction form
   7,019.88/9,687.31 = 3,876/x
3. Step 3: Cross multiply
   7,019.88x = 9,687.31 × 3,876
4. Step 4: Simplify right side
   7,019.88x = 37,548,003.87
5. Step 5: Solve for x
   x = 37,548,003.87/7,019.88
6. Step 6: Final answer
   x = 5,348.81