Finding the Fourth Proportional to 8,469.59, 12,671.57 and 5,682.99

Step by Step Solution

1. Step 1: Write the proportion equation
   8,469.59 : 12,671.57 = 5,682.99 : x
2. Step 2: Convert to fraction form
   8,469.59/12,671.57 = 5,682.99/x
3. Step 3: Cross multiply
   8,469.59x = 12,671.57 × 5,682.99
4. Step 4: Simplify right side
   8,469.59x = 72,012,377.18
5. Step 5: Solve for x
   x = 72,012,377.18/8,469.59
6. Step 6: Final answer
   x = 8,502.47