Finding the Fourth Proportional to 12,680.05, 17,498.32 and 7,014.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,680.05 : 17,498.32 = 7,014.35 : x
2. Step 2: Convert to fraction form
   12,680.05/17,498.32 = 7,014.35/x
3. Step 3: Cross multiply
   12,680.05x = 17,498.32 × 7,014.35
4. Step 4: Simplify right side
   12,680.05x = 122,739,340.89
5. Step 5: Solve for x
   x = 122,739,340.89/12,680.05
6. Step 6: Final answer
   x = 9,679.72