Finding the Fourth Proportional to 8,099.32, 12,143.78 and 3,418.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,099.32 : 12,143.78 = 3,418.05 : x
2. Step 2: Convert to fraction form
   8,099.32/12,143.78 = 3,418.05/x
3. Step 3: Cross multiply
   8,099.32x = 12,143.78 × 3,418.05
4. Step 4: Simplify right side
   8,099.32x = 41,508,047.23
5. Step 5: Solve for x
   x = 41,508,047.23/8,099.32
6. Step 6: Final answer
   x = 5,124.88