Finding the Fourth Proportional to 12,680.85, 17,499.15 and 7,016.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,680.85 : 17,499.15 = 7,016.13 : x
2. Step 2: Convert to fraction form
   12,680.85/17,499.15 = 7,016.13/x
3. Step 3: Cross multiply
   12,680.85x = 17,499.15 × 7,016.13
4. Step 4: Simplify right side
   12,680.85x = 122,776,311.29
5. Step 5: Solve for x
   x = 122,776,311.29/12,680.85
6. Step 6: Final answer
   x = 9,682.03