Finding the Fourth Proportional to 12,287.55, 16,943.42 and 8,301.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,287.55 : 16,943.42 = 8,301.74 : x
2. Step 2: Convert to fraction form
   12,287.55/16,943.42 = 8,301.74/x
3. Step 3: Cross multiply
   12,287.55x = 16,943.42 × 8,301.74
4. Step 4: Simplify right side
   12,287.55x = 140,659,867.55
5. Step 5: Solve for x
   x = 140,659,867.55/12,287.55
6. Step 6: Final answer
   x = 11,447.35