Finding the Fourth Proportional to 12,215.16, 16,854.12 and 6,908.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,215.16 : 16,854.12 = 6,908.82 : x
2. Step 2: Convert to fraction form
   12,215.16/16,854.12 = 6,908.82/x
3. Step 3: Cross multiply
   12,215.16x = 16,854.12 × 6,908.82
4. Step 4: Simplify right side
   12,215.16x = 116,442,081.34
5. Step 5: Solve for x
   x = 116,442,081.34/12,215.16
6. Step 6: Final answer
   x = 9,532.59