Finding the Fourth Proportional to 12,685.50, 17,505.99 and 7,096.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,685.50 : 17,505.99 = 7,096.50 : x
2. Step 2: Convert to fraction form
   12,685.50/17,505.99 = 7,096.50/x
3. Step 3: Cross multiply
   12,685.50x = 17,505.99 × 7,096.50
4. Step 4: Simplify right side
   12,685.50x = 124,231,258.04
5. Step 5: Solve for x
   x = 124,231,258.04/12,685.50
6. Step 6: Final answer
   x = 9,793.17