Finding the Fourth Proportional to 36,989.92, 55,490.15 and 12,021.94

Step by Step Solution

1. Step 1: Write the proportion equation
   36,989.92 : 55,490.15 = 12,021.94 : x
2. Step 2: Convert to fraction form
   36,989.92/55,490.15 = 12,021.94/x
3. Step 3: Cross multiply
   36,989.92x = 55,490.15 × 12,021.94
4. Step 4: Simplify right side
   36,989.92x = 667,099,253.89
5. Step 5: Solve for x
   x = 667,099,253.89/36,989.92
6. Step 6: Final answer
   x = 18,034.62