Finding the Fourth Proportional to 12,658.19, 17,469.41 and 7,622.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,658.19 : 17,469.41 = 7,622.42 : x
2. Step 2: Convert to fraction form
   12,658.19/17,469.41 = 7,622.42/x
3. Step 3: Cross multiply
   12,658.19x = 17,469.41 × 7,622.42
4. Step 4: Simplify right side
   12,658.19x = 133,159,054.71
5. Step 5: Solve for x
   x = 133,159,054.71/12,658.19
6. Step 6: Final answer
   x = 10,519.60