Finding the Fourth Proportional to 11,987.60, 17,984.16 and 3,668.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,987.60 : 17,984.16 = 3,668.83 : x
2. Step 2: Convert to fraction form
   11,987.60/17,984.16 = 3,668.83/x
3. Step 3: Cross multiply
   11,987.60x = 17,984.16 × 3,668.83
4. Step 4: Simplify right side
   11,987.60x = 65,980,780.77
5. Step 5: Solve for x
   x = 65,980,780.77/11,987.60
6. Step 6: Final answer
   x = 5,504.09