Finding the Fourth Proportional to 7,020.38, 9,687.88 and 3,876.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,020.38 : 9,687.88 = 3,876.50 : x
2. Step 2: Convert to fraction form
   7,020.38/9,687.88 = 3,876.50/x
3. Step 3: Cross multiply
   7,020.38x = 9,687.88 × 3,876.50
4. Step 4: Simplify right side
   7,020.38x = 37,555,066.82
5. Step 5: Solve for x
   x = 37,555,066.82/7,020.38
6. Step 6: Final answer
   x = 5,349.44