Finding the Fourth Proportional to 12,158.82, 18,240.66 and 3,839.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,158.82 : 18,240.66 = 3,839.61 : x
2. Step 2: Convert to fraction form
   12,158.82/18,240.66 = 3,839.61/x
3. Step 3: Cross multiply
   12,158.82x = 18,240.66 × 3,839.61
4. Step 4: Simplify right side
   12,158.82x = 70,037,088.95
5. Step 5: Solve for x
   x = 70,037,088.95/12,158.82
6. Step 6: Final answer
   x = 5,760.19