Finding the Fourth Proportional to 9,404.24, 12,958.92 and 7,029.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,404.24 : 12,958.92 = 7,029.20 : x
2. Step 2: Convert to fraction form
   9,404.24/12,958.92 = 7,029.20/x
3. Step 3: Cross multiply
   9,404.24x = 12,958.92 × 7,029.20
4. Step 4: Simplify right side
   9,404.24x = 91,090,840.46
5. Step 5: Solve for x
   x = 91,090,840.46/9,404.24
6. Step 6: Final answer
   x = 9,686.15