Finding the Fourth Proportional to 12,440.56, 17,167.98 and 7,724.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,440.56 : 17,167.98 = 7,724.84 : x
2. Step 2: Convert to fraction form
   12,440.56/17,167.98 = 7,724.84/x
3. Step 3: Cross multiply
   12,440.56x = 17,167.98 × 7,724.84
4. Step 4: Simplify right side
   12,440.56x = 132,619,898.62
5. Step 5: Solve for x
   x = 132,619,898.62/12,440.56
6. Step 6: Final answer
   x = 10,660.28