Finding the Fourth Proportional to 37,139.94, 55,691.64 and 12,175.38

Step by Step Solution

1. Step 1: Write the proportion equation
   37,139.94 : 55,691.64 = 12,175.38 : x
2. Step 2: Convert to fraction form
   37,139.94/55,691.64 = 12,175.38/x
3. Step 3: Cross multiply
   37,139.94x = 55,691.64 × 12,175.38
4. Step 4: Simplify right side
   37,139.94x = 678,066,879.82
5. Step 5: Solve for x
   x = 678,066,879.82/37,139.94
6. Step 6: Final answer
   x = 18,257.08