Finding the Fourth Proportional to 12,143.58, 18,215.34 and 3,824.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,143.58 : 18,215.34 = 3,824.29 : x
2. Step 2: Convert to fraction form
   12,143.58/18,215.34 = 3,824.29/x
3. Step 3: Cross multiply
   12,143.58x = 18,215.34 × 3,824.29
4. Step 4: Simplify right side
   12,143.58x = 69,660,742.61
5. Step 5: Solve for x
   x = 69,660,742.61/12,143.58
6. Step 6: Final answer
   x = 5,736.43