Finding the Fourth Proportional to 8,061.21, 12,087.50 and 3,679.65

Step by Step Solution

1. Step 1: Write the proportion equation
   8,061.21 : 12,087.50 = 3,679.65 : x
2. Step 2: Convert to fraction form
   8,061.21/12,087.50 = 3,679.65/x
3. Step 3: Cross multiply
   8,061.21x = 12,087.50 × 3,679.65
4. Step 4: Simplify right side
   8,061.21x = 44,477,750.98
5. Step 5: Solve for x
   x = 44,477,750.98/8,061.21
6. Step 6: Final answer
   x = 5,517.50