Finding the Fourth Proportional to 37,287.10, 55,939.40 and 12,327.15

Step by Step Solution

1. Step 1: Write the proportion equation
   37,287.10 : 55,939.40 = 12,327.15 : x
2. Step 2: Convert to fraction form
   37,287.10/55,939.40 = 12,327.15/x
3. Step 3: Cross multiply
   37,287.10x = 55,939.40 × 12,327.15
4. Step 4: Simplify right side
   37,287.10x = 689,573,374.71
5. Step 5: Solve for x
   x = 689,573,374.71/37,287.10
6. Step 6: Final answer
   x = 18,493.62