Finding the Fourth Proportional to 12,016.40, 16,582.55 and 6,980.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,016.40 : 16,582.55 = 6,980.82 : x
2. Step 2: Convert to fraction form
   12,016.40/16,582.55 = 6,980.82/x
3. Step 3: Cross multiply
   12,016.40x = 16,582.55 × 6,980.82
4. Step 4: Simplify right side
   12,016.40x = 115,759,761.79
5. Step 5: Solve for x
   x = 115,759,761.79/12,016.40
6. Step 6: Final answer
   x = 9,633.49