Finding the Fourth Proportional to 37,965.39, 56,942.25 and 12,665.36

Step by Step Solution

1. Step 1: Write the proportion equation
   37,965.39 : 56,942.25 = 12,665.36 : x
2. Step 2: Convert to fraction form
   37,965.39/56,942.25 = 12,665.36/x
3. Step 3: Cross multiply
   37,965.39x = 56,942.25 × 12,665.36
4. Step 4: Simplify right side
   37,965.39x = 721,194,095.46
5. Step 5: Solve for x
   x = 721,194,095.46/37,965.39
6. Step 6: Final answer
   x = 18,996.09