Finding the Fourth Proportional to 12,786.42, 19,181.46 and 4,018.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,786.42 : 19,181.46 = 4,018.38 : x
2. Step 2: Convert to fraction form
   12,786.42/19,181.46 = 4,018.38/x
3. Step 3: Cross multiply
   12,786.42x = 19,181.46 × 4,018.38
4. Step 4: Simplify right side
   12,786.42x = 77,078,395.23
5. Step 5: Solve for x
   x = 77,078,395.23/12,786.42
6. Step 6: Final answer
   x = 6,028.15