Finding the Fourth Proportional to 11,989.32, 17,986.02 and 3,668.46

Step by Step Solution

1. Step 1: Write the proportion equation
   11,989.32 : 17,986.02 = 3,668.46 : x
2. Step 2: Convert to fraction form
   11,989.32/17,986.02 = 3,668.46/x
3. Step 3: Cross multiply
   11,989.32x = 17,986.02 × 3,668.46
4. Step 4: Simplify right side
   11,989.32x = 65,981,096.43
5. Step 5: Solve for x
   x = 65,981,096.43/11,989.32
6. Step 6: Final answer
   x = 5,503.32