Finding the Fourth Proportional to 37,647.67, 56,457.10 and 12,681

Step by Step Solution

1. Step 1: Write the proportion equation
   37,647.67 : 56,457.10 = 12,681 : x
2. Step 2: Convert to fraction form
   37,647.67/56,457.10 = 12,681/x
3. Step 3: Cross multiply
   37,647.67x = 56,457.10 × 12,681
4. Step 4: Simplify right side
   37,647.67x = 715,932,485.10
5. Step 5: Solve for x
   x = 715,932,485.10/37,647.67
6. Step 6: Final answer
   x = 19,016.65