Finding the Fourth Proportional to 12,814.48, 17,685 and 7,151.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,814.48 : 17,685 = 7,151.08 : x
2. Step 2: Convert to fraction form
   12,814.48/17,685 = 7,151.08/x
3. Step 3: Cross multiply
   12,814.48x = 17,685 × 7,151.08
4. Step 4: Simplify right side
   12,814.48x = 126,466,849.80
5. Step 5: Solve for x
   x = 126,466,849.80/12,814.48
6. Step 6: Final answer
   x = 9,869.06