Finding the Fourth Proportional to 37,728, 56,617.92 and 13,104

Step by Step Solution

1. Step 1: Write the proportion equation
   37,728 : 56,617.92 = 13,104 : x
2. Step 2: Convert to fraction form
   37,728/56,617.92 = 13,104/x
3. Step 3: Cross multiply
   37,728x = 56,617.92 × 13,104
4. Step 4: Simplify right side
   37,728x = 741,921,223.68
5. Step 5: Solve for x
   x = 741,921,223.68/37,728
6. Step 6: Final answer
   x = 19,665.00