Finding the Fourth Proportional to 37,040.78, 55,562.96 and 12,080.78

Step by Step Solution

1. Step 1: Write the proportion equation
   37,040.78 : 55,562.96 = 12,080.78 : x
2. Step 2: Convert to fraction form
   37,040.78/55,562.96 = 12,080.78/x
3. Step 3: Cross multiply
   37,040.78x = 55,562.96 × 12,080.78
4. Step 4: Simplify right side
   37,040.78x = 671,243,974.41
5. Step 5: Solve for x
   x = 671,243,974.41/37,040.78
6. Step 6: Final answer
   x = 18,121.75