Finding the Fourth Proportional to 10,147.05, 13,949.16 and 8,725.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,147.05 : 13,949.16 = 8,725.53 : x
2. Step 2: Convert to fraction form
   10,147.05/13,949.16 = 8,725.53/x
3. Step 3: Cross multiply
   10,147.05x = 13,949.16 × 8,725.53
4. Step 4: Simplify right side
   10,147.05x = 121,713,814.05
5. Step 5: Solve for x
   x = 121,713,814.05/10,147.05
6. Step 6: Final answer
   x = 11,995.00