Finding the Fourth Proportional to 12,429.27, 17,152.83 and 7,122.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429.27 : 17,152.83 = 7,122.96 : x
2. Step 2: Convert to fraction form
   12,429.27/17,152.83 = 7,122.96/x
3. Step 3: Cross multiply
   12,429.27x = 17,152.83 × 7,122.96
4. Step 4: Simplify right side
   12,429.27x = 122,178,921.98
5. Step 5: Solve for x
   x = 122,178,921.98/12,429.27
6. Step 6: Final answer
   x = 9,829.94