Finding the Fourth Proportional to 12,321, 18,481.32 and 5,743.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,321 : 18,481.32 = 5,743.50 : x
2. Step 2: Convert to fraction form
   12,321/18,481.32 = 5,743.50/x
3. Step 3: Cross multiply
   12,321x = 18,481.32 × 5,743.50
4. Step 4: Simplify right side
   12,321x = 106,147,461.42
5. Step 5: Solve for x
   x = 106,147,461.42/12,321
6. Step 6: Final answer
   x = 8,615.17