Finding the Fourth Proportional to 11,658.42, 17,490.06 and 3,866.67

Step by Step Solution

1. Step 1: Write the proportion equation
   11,658.42 : 17,490.06 = 3,866.67 : x
2. Step 2: Convert to fraction form
   11,658.42/17,490.06 = 3,866.67/x
3. Step 3: Cross multiply
   11,658.42x = 17,490.06 × 3,866.67
4. Step 4: Simplify right side
   11,658.42x = 67,628,290.30
5. Step 5: Solve for x
   x = 67,628,290.30/11,658.42
6. Step 6: Final answer
   x = 5,800.81