Finding the Fourth Proportional to 12,582.72, 17,363.97 and 7,278.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,582.72 : 17,363.97 = 7,278.03 : x
2. Step 2: Convert to fraction form
   12,582.72/17,363.97 = 7,278.03/x
3. Step 3: Cross multiply
   12,582.72x = 17,363.97 × 7,278.03
4. Step 4: Simplify right side
   12,582.72x = 126,375,494.58
5. Step 5: Solve for x
   x = 126,375,494.58/12,582.72
6. Step 6: Final answer
   x = 10,043.58