Finding the Fourth Proportional to 12,145.36, 18,218.69 and 3,826.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,145.36 : 18,218.69 = 3,826.02 : x
2. Step 2: Convert to fraction form
   12,145.36/18,218.69 = 3,826.02/x
3. Step 3: Cross multiply
   12,145.36x = 18,218.69 × 3,826.02
4. Step 4: Simplify right side
   12,145.36x = 69,705,098.73
5. Step 5: Solve for x
   x = 69,705,098.73/12,145.36
6. Step 6: Final answer
   x = 5,739.24