Finding the Fourth Proportional to 8,659.71, 11,945.88 and 5,674.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,659.71 : 11,945.88 = 5,674.05 : x
2. Step 2: Convert to fraction form
   8,659.71/11,945.88 = 5,674.05/x
3. Step 3: Cross multiply
   8,659.71x = 11,945.88 × 5,674.05
4. Step 4: Simplify right side
   8,659.71x = 67,781,520.41
5. Step 5: Solve for x
   x = 67,781,520.41/8,659.71
6. Step 6: Final answer
   x = 7,827.23