Finding the Fourth Proportional to 37,086.81, 55,637.37 and 12,120.12

Step by Step Solution

1. Step 1: Write the proportion equation
   37,086.81 : 55,637.37 = 12,120.12 : x
2. Step 2: Convert to fraction form
   37,086.81/55,637.37 = 12,120.12/x
3. Step 3: Cross multiply
   37,086.81x = 55,637.37 × 12,120.12
4. Step 4: Simplify right side
   37,086.81x = 674,331,600.88
5. Step 5: Solve for x
   x = 674,331,600.88/37,086.81
6. Step 6: Final answer
   x = 18,182.52