Finding the Fourth Proportional to 8,109.10, 12,169.05 and 3,724.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.10 : 12,169.05 = 3,724.30 : x
2. Step 2: Convert to fraction form
   8,109.10/12,169.05 = 3,724.30/x
3. Step 3: Cross multiply
   8,109.10x = 12,169.05 × 3,724.30
4. Step 4: Simplify right side
   8,109.10x = 45,321,192.92
5. Step 5: Solve for x
   x = 45,321,192.92/8,109.10
6. Step 6: Final answer
   x = 5,588.93