Finding the Fourth Proportional to 9,906.72, 14,866.02 and 3,665.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,906.72 : 14,866.02 = 3,665.67 : x
2. Step 2: Convert to fraction form
   9,906.72/14,866.02 = 3,665.67/x
3. Step 3: Cross multiply
   9,906.72x = 14,866.02 × 3,665.67
4. Step 4: Simplify right side
   9,906.72x = 54,493,923.53
5. Step 5: Solve for x
   x = 54,493,923.53/9,906.72
6. Step 6: Final answer
   x = 5,500.70