Finding the Fourth Proportional to 12,980.60, 17,913.25 and 7,012.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.60 : 17,913.25 = 7,012.27 : x
2. Step 2: Convert to fraction form
   12,980.60/17,913.25 = 7,012.27/x
3. Step 3: Cross multiply
   12,980.60x = 17,913.25 × 7,012.27
4. Step 4: Simplify right side
   12,980.60x = 125,612,576.73
5. Step 5: Solve for x
   x = 125,612,576.73/12,980.60
6. Step 6: Final answer
   x = 9,676.94