Finding the Fourth Proportional to 12,680.85, 17,499.47 and 7,016.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,680.85 : 17,499.47 = 7,016.02 : x
2. Step 2: Convert to fraction form
   12,680.85/17,499.47 = 7,016.02/x
3. Step 3: Cross multiply
   12,680.85x = 17,499.47 × 7,016.02
4. Step 4: Simplify right side
   12,680.85x = 122,776,572.41
5. Step 5: Solve for x
   x = 122,776,572.41/12,680.85
6. Step 6: Final answer
   x = 9,682.04