Finding the Fourth Proportional to 36,930.65, 55,404.72 and 11,970.71

Step by Step Solution

1. Step 1: Write the proportion equation
   36,930.65 : 55,404.72 = 11,970.71 : x
2. Step 2: Convert to fraction form
   36,930.65/55,404.72 = 11,970.71/x
3. Step 3: Cross multiply
   36,930.65x = 55,404.72 × 11,970.71
4. Step 4: Simplify right side
   36,930.65x = 663,233,939.15
5. Step 5: Solve for x
   x = 663,233,939.15/36,930.65
6. Step 6: Final answer
   x = 17,958.90