Finding the Fourth Proportional to 36,945.72, 55,440.45 and 13,588.56

Step by Step Solution

1. Step 1: Write the proportion equation
   36,945.72 : 55,440.45 = 13,588.56 : x
2. Step 2: Convert to fraction form
   36,945.72/55,440.45 = 13,588.56/x
3. Step 3: Cross multiply
   36,945.72x = 55,440.45 × 13,588.56
4. Step 4: Simplify right side
   36,945.72x = 753,355,881.25
5. Step 5: Solve for x
   x = 753,355,881.25/36,945.72
6. Step 6: Final answer
   x = 20,390.88