Finding the Fourth Proportional to 8,739.03, 12,067.89 and 5,553.39

Step by Step Solution

1. Step 1: Write the proportion equation
   8,739.03 : 12,067.89 = 5,553.39 : x
2. Step 2: Convert to fraction form
   8,739.03/12,067.89 = 5,553.39/x
3. Step 3: Cross multiply
   8,739.03x = 12,067.89 × 5,553.39
4. Step 4: Simplify right side
   8,739.03x = 67,017,699.65
5. Step 5: Solve for x
   x = 67,017,699.65/8,739.03
6. Step 6: Final answer
   x = 7,668.78