Finding the Fourth Proportional to 36,744.69, 55,123.89 and 13,066.31

Step by Step Solution

1. Step 1: Write the proportion equation
   36,744.69 : 55,123.89 = 13,066.31 : x
2. Step 2: Convert to fraction form
   36,744.69/55,123.89 = 13,066.31/x
3. Step 3: Cross multiply
   36,744.69x = 55,123.89 × 13,066.31
4. Step 4: Simplify right side
   36,744.69x = 720,265,997.45
5. Step 5: Solve for x
   x = 720,265,997.45/36,744.69
6. Step 6: Final answer
   x = 19,601.91