Finding the Fourth Proportional to 12,105.92, 18,154.88 and 3,896

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105.92 : 18,154.88 = 3,896 : x
2. Step 2: Convert to fraction form
   12,105.92/18,154.88 = 3,896/x
3. Step 3: Cross multiply
   12,105.92x = 18,154.88 × 3,896
4. Step 4: Simplify right side
   12,105.92x = 70,731,412.48
5. Step 5: Solve for x
   x = 70,731,412.48/12,105.92
6. Step 6: Final answer
   x = 5,842.71