Finding the Fourth Proportional to 37,185.13, 55,765.86 and 12,219.37

Step by Step Solution

1. Step 1: Write the proportion equation
   37,185.13 : 55,765.86 = 12,219.37 : x
2. Step 2: Convert to fraction form
   37,185.13/55,765.86 = 12,219.37/x
3. Step 3: Cross multiply
   37,185.13x = 55,765.86 × 12,219.37
4. Step 4: Simplify right side
   37,185.13x = 681,423,676.71
5. Step 5: Solve for x
   x = 681,423,676.71/37,185.13
6. Step 6: Final answer
   x = 18,325.17