Finding the Fourth Proportional to 36,664.72, 55,002.65 and 13,285.69

Step by Step Solution

1. Step 1: Write the proportion equation
   36,664.72 : 55,002.65 = 13,285.69 : x
2. Step 2: Convert to fraction form
   36,664.72/55,002.65 = 13,285.69/x
3. Step 3: Cross multiply
   36,664.72x = 55,002.65 × 13,285.69
4. Step 4: Simplify right side
   36,664.72x = 730,747,953.14
5. Step 5: Solve for x
   x = 730,747,953.14/36,664.72
6. Step 6: Final answer
   x = 19,930.55