Finding the Fourth Proportional to 12,233.16, 18,344.10 and 3,911.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,233.16 : 18,344.10 = 3,911.31 : x
2. Step 2: Convert to fraction form
   12,233.16/18,344.10 = 3,911.31/x
3. Step 3: Cross multiply
   12,233.16x = 18,344.10 × 3,911.31
4. Step 4: Simplify right side
   12,233.16x = 71,749,461.77
5. Step 5: Solve for x
   x = 71,749,461.77/12,233.16
6. Step 6: Final answer
   x = 5,865.16