Finding the Fourth Proportional to 37,146.60, 55,680.72 and 12,180.12

Step by Step Solution

1. Step 1: Write the proportion equation
   37,146.60 : 55,680.72 = 12,180.12 : x
2. Step 2: Convert to fraction form
   37,146.60/55,680.72 = 12,180.12/x
3. Step 3: Cross multiply
   37,146.60x = 55,680.72 × 12,180.12
4. Step 4: Simplify right side
   37,146.60x = 678,197,851.29
5. Step 5: Solve for x
   x = 678,197,851.29/37,146.60
6. Step 6: Final answer
   x = 18,257.33