Finding the Fourth Proportional to 8,429.40, 12,647.79 and 4,529.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,429.40 : 12,647.79 = 4,529.25 : x
2. Step 2: Convert to fraction form
   8,429.40/12,647.79 = 4,529.25/x
3. Step 3: Cross multiply
   8,429.40x = 12,647.79 × 4,529.25
4. Step 4: Simplify right side
   8,429.40x = 57,285,002.86
5. Step 5: Solve for x
   x = 57,285,002.86/8,429.40
6. Step 6: Final answer
   x = 6,795.86