Finding the Fourth Proportional to 12,429.11, 17,152.23 and 7,124.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429.11 : 17,152.23 = 7,124.24 : x
2. Step 2: Convert to fraction form
   12,429.11/17,152.23 = 7,124.24/x
3. Step 3: Cross multiply
   12,429.11x = 17,152.23 × 7,124.24
4. Step 4: Simplify right side
   12,429.11x = 122,196,603.06
5. Step 5: Solve for x
   x = 122,196,603.06/12,429.11
6. Step 6: Final answer
   x = 9,831.48