Finding the Fourth Proportional to 8,019.90, 12,021.35 and 3,087.41

Step by Step Solution

1. Step 1: Write the proportion equation
   8,019.90 : 12,021.35 = 3,087.41 : x
2. Step 2: Convert to fraction form
   8,019.90/12,021.35 = 3,087.41/x
3. Step 3: Cross multiply
   8,019.90x = 12,021.35 × 3,087.41
4. Step 4: Simplify right side
   8,019.90x = 37,114,760.66
5. Step 5: Solve for x
   x = 37,114,760.66/8,019.90
6. Step 6: Final answer
   x = 4,627.83