Finding the Fourth Proportional to 12,429.27, 17,152.80 and 7,125.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429.27 : 17,152.80 = 7,125.09 : x
2. Step 2: Convert to fraction form
   12,429.27/17,152.80 = 7,125.09/x
3. Step 3: Cross multiply
   12,429.27x = 17,152.80 × 7,125.09
4. Step 4: Simplify right side
   12,429.27x = 122,215,243.75
5. Step 5: Solve for x
   x = 122,215,243.75/12,429.27
6. Step 6: Final answer
   x = 9,832.86