Finding the Fourth Proportional to 12,581.28, 18,870.96 and 3,816.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,581.28 : 18,870.96 = 3,816.24 : x
2. Step 2: Convert to fraction form
   12,581.28/18,870.96 = 3,816.24/x
3. Step 3: Cross multiply
   12,581.28x = 18,870.96 × 3,816.24
4. Step 4: Simplify right side
   12,581.28x = 72,016,112.39
5. Step 5: Solve for x
   x = 72,016,112.39/12,581.28
6. Step 6: Final answer
   x = 5,724.07