Finding the Fourth Proportional to 37,131.57, 55,658.30 and 12,165.12

Step by Step Solution

1. Step 1: Write the proportion equation
   37,131.57 : 55,658.30 = 12,165.12 : x
2. Step 2: Convert to fraction form
   37,131.57/55,658.30 = 12,165.12/x
3. Step 3: Cross multiply
   37,131.57x = 55,658.30 × 12,165.12
4. Step 4: Simplify right side
   37,131.57x = 677,089,837.67
5. Step 5: Solve for x
   x = 677,089,837.67/37,131.57
6. Step 6: Final answer
   x = 18,234.88