Finding the Fourth Proportional to 35,942.89, 53,920.73 and 12,249.12

Step by Step Solution

1. Step 1: Write the proportion equation
   35,942.89 : 53,920.73 = 12,249.12 : x
2. Step 2: Convert to fraction form
   35,942.89/53,920.73 = 12,249.12/x
3. Step 3: Cross multiply
   35,942.89x = 53,920.73 × 12,249.12
4. Step 4: Simplify right side
   35,942.89x = 660,481,522.88
5. Step 5: Solve for x
   x = 660,481,522.88/35,942.89
6. Step 6: Final answer
   x = 18,375.86