Finding the Fourth Proportional to 8,099.95, 12,140.57 and 3,656.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,099.95 : 12,140.57 = 3,656.69 : x
2. Step 2: Convert to fraction form
   8,099.95/12,140.57 = 3,656.69/x
3. Step 3: Cross multiply
   8,099.95x = 12,140.57 × 3,656.69
4. Step 4: Simplify right side
   8,099.95x = 44,394,300.91
5. Step 5: Solve for x
   x = 44,394,300.91/8,099.95
6. Step 6: Final answer
   x = 5,480.81