Finding the Fourth Proportional to 37,185.50, 55,766.42 and 12,219.77

Step by Step Solution

1. Step 1: Write the proportion equation
   37,185.50 : 55,766.42 = 12,219.77 : x
2. Step 2: Convert to fraction form
   37,185.50/55,766.42 = 12,219.77/x
3. Step 3: Cross multiply
   37,185.50x = 55,766.42 × 12,219.77
4. Step 4: Simplify right side
   37,185.50x = 681,452,717.26
5. Step 5: Solve for x
   x = 681,452,717.26/37,185.50
6. Step 6: Final answer
   x = 18,325.77