Finding the Fourth Proportional to 12,754.28, 17,609.67 and 7,976.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,754.28 : 17,609.67 = 7,976.30 : x
2. Step 2: Convert to fraction form
   12,754.28/17,609.67 = 7,976.30/x
3. Step 3: Cross multiply
   12,754.28x = 17,609.67 × 7,976.30
4. Step 4: Simplify right side
   12,754.28x = 140,459,922.77
5. Step 5: Solve for x
   x = 140,459,922.77/12,754.28
6. Step 6: Final answer
   x = 11,012.77