Finding the Fourth Proportional to 3,991.69, 5,508.54 and 2,313.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,991.69 : 5,508.54 = 2,313.42 : x
2. Step 2: Convert to fraction form
   3,991.69/5,508.54 = 2,313.42/x
3. Step 3: Cross multiply
   3,991.69x = 5,508.54 × 2,313.42
4. Step 4: Simplify right side
   3,991.69x = 12,743,566.61
5. Step 5: Solve for x
   x = 12,743,566.61/3,991.69
6. Step 6: Final answer
   x = 3,192.53