Finding the Fourth Proportional to 12,528.72, 17,282.04 and 8,279.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,528.72 : 17,282.04 = 8,279.82 : x
2. Step 2: Convert to fraction form
   12,528.72/17,282.04 = 8,279.82/x
3. Step 3: Cross multiply
   12,528.72x = 17,282.04 × 8,279.82
4. Step 4: Simplify right side
   12,528.72x = 143,092,180.43
5. Step 5: Solve for x
   x = 143,092,180.43/12,528.72
6. Step 6: Final answer
   x = 11,421.13