Finding the Fourth Proportional to 12,429.44, 17,153.22 and 7,124.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429.44 : 17,153.22 = 7,124.27 : x
2. Step 2: Convert to fraction form
   12,429.44/17,153.22 = 7,124.27/x
3. Step 3: Cross multiply
   12,429.44x = 17,153.22 × 7,124.27
4. Step 4: Simplify right side
   12,429.44x = 122,204,084.88
5. Step 5: Solve for x
   x = 122,204,084.88/12,429.44
6. Step 6: Final answer
   x = 9,831.83