Finding the Fourth Proportional to 12,361.73, 18,548.69 and 5,786.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,361.73 : 18,548.69 = 5,786.78 : x
2. Step 2: Convert to fraction form
   12,361.73/18,548.69 = 5,786.78/x
3. Step 3: Cross multiply
   12,361.73x = 18,548.69 × 5,786.78
4. Step 4: Simplify right side
   12,361.73x = 107,337,066.64
5. Step 5: Solve for x
   x = 107,337,066.64/12,361.73
6. Step 6: Final answer
   x = 8,683.02