Finding the Fourth Proportional to 37,181.88, 55,760.99 and 12,216.15

Step by Step Solution

1. Step 1: Write the proportion equation
   37,181.88 : 55,760.99 = 12,216.15 : x
2. Step 2: Convert to fraction form
   37,181.88/55,760.99 = 12,216.15/x
3. Step 3: Cross multiply
   37,181.88x = 55,760.99 × 12,216.15
4. Step 4: Simplify right side
   37,181.88x = 681,184,556.91
5. Step 5: Solve for x
   x = 681,184,556.91/37,181.88
6. Step 6: Final answer
   x = 18,320.34