Finding the Fourth Proportional to 37,147.78, 55,721.71 and 13,149.94

Step by Step Solution

1. Step 1: Write the proportion equation
   37,147.78 : 55,721.71 = 13,149.94 : x
2. Step 2: Convert to fraction form
   37,147.78/55,721.71 = 13,149.94/x
3. Step 3: Cross multiply
   37,147.78x = 55,721.71 × 13,149.94
4. Step 4: Simplify right side
   37,147.78x = 732,736,864.59
5. Step 5: Solve for x
   x = 732,736,864.59/37,147.78
6. Step 6: Final answer
   x = 19,724.92