Finding the Fourth Proportional to 36,727.50, 55,099.89 and 12,103.50

Step by Step Solution

1. Step 1: Write the proportion equation
   36,727.50 : 55,099.89 = 12,103.50 : x
2. Step 2: Convert to fraction form
   36,727.50/55,099.89 = 12,103.50/x
3. Step 3: Cross multiply
   36,727.50x = 55,099.89 × 12,103.50
4. Step 4: Simplify right side
   36,727.50x = 666,901,518.62
5. Step 5: Solve for x
   x = 666,901,518.62/36,727.50
6. Step 6: Final answer
   x = 18,158.10