Finding the Fourth Proportional to 8,598.72, 12,902.49 and 3,918.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,598.72 : 12,902.49 = 3,918.09 : x
2. Step 2: Convert to fraction form
   8,598.72/12,902.49 = 3,918.09/x
3. Step 3: Cross multiply
   8,598.72x = 12,902.49 × 3,918.09
4. Step 4: Simplify right side
   8,598.72x = 50,553,092.85
5. Step 5: Solve for x
   x = 50,553,092.85/8,598.72
6. Step 6: Final answer
   x = 5,879.14