Finding the Fourth Proportional to 12,879.46, 17,776.29 and 7,291.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,879.46 : 17,776.29 = 7,291.54 : x
2. Step 2: Convert to fraction form
   12,879.46/17,776.29 = 7,291.54/x
3. Step 3: Cross multiply
   12,879.46x = 17,776.29 × 7,291.54
4. Step 4: Simplify right side
   12,879.46x = 129,616,529.59
5. Step 5: Solve for x
   x = 129,616,529.59/12,879.46
6. Step 6: Final answer
   x = 10,063.82