Finding the Fourth Proportional to 12,462.88, 17,223.30 and 10,221.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,462.88 : 17,223.30 = 10,221.16 : x
2. Step 2: Convert to fraction form
   12,462.88/17,223.30 = 10,221.16/x
3. Step 3: Cross multiply
   12,462.88x = 17,223.30 × 10,221.16
4. Step 4: Simplify right side
   12,462.88x = 176,042,105.03
5. Step 5: Solve for x
   x = 176,042,105.03/12,462.88
6. Step 6: Final answer
   x = 14,125.31