Finding the Fourth Proportional to 8,429.89, 12,634.58 and 5,965.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,429.89 : 12,634.58 = 5,965.42 : x
2. Step 2: Convert to fraction form
   8,429.89/12,634.58 = 5,965.42/x
3. Step 3: Cross multiply
   8,429.89x = 12,634.58 × 5,965.42
4. Step 4: Simplify right side
   8,429.89x = 75,370,576.22
5. Step 5: Solve for x
   x = 75,370,576.22/8,429.89
6. Step 6: Final answer
   x = 8,940.87