Finding the Fourth Proportional to 8,429.42, 12,645.49 and 3,164.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,429.42 : 12,645.49 = 3,164.84 : x
2. Step 2: Convert to fraction form
   8,429.42/12,645.49 = 3,164.84/x
3. Step 3: Cross multiply
   8,429.42x = 12,645.49 × 3,164.84
4. Step 4: Simplify right side
   8,429.42x = 40,020,952.57
5. Step 5: Solve for x
   x = 40,020,952.57/8,429.42
6. Step 6: Final answer
   x = 4,747.77