Finding the Fourth Proportional to 37,005.72, 55,530.45 and 13,648.56

Step by Step Solution

1. Step 1: Write the proportion equation
   37,005.72 : 55,530.45 = 13,648.56 : x
2. Step 2: Convert to fraction form
   37,005.72/55,530.45 = 13,648.56/x
3. Step 3: Cross multiply
   37,005.72x = 55,530.45 × 13,648.56
4. Step 4: Simplify right side
   37,005.72x = 757,910,678.65
5. Step 5: Solve for x
   x = 757,910,678.65/37,005.72
6. Step 6: Final answer
   x = 20,480.91