Finding the Fourth Proportional to 8,472.69, 12,710.89 and 3,475.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,472.69 : 12,710.89 = 3,475.09 : x
2. Step 2: Convert to fraction form
   8,472.69/12,710.89 = 3,475.09/x
3. Step 3: Cross multiply
   8,472.69x = 12,710.89 × 3,475.09
4. Step 4: Simplify right side
   8,472.69x = 44,171,496.42
5. Step 5: Solve for x
   x = 44,171,496.42/8,472.69
6. Step 6: Final answer
   x = 5,213.40