Finding the Fourth Proportional to 17,144.42, 25,719.83 and 7,785.09

Step by Step Solution

1. Step 1: Write the proportion equation
   17,144.42 : 25,719.83 = 7,785.09 : x
2. Step 2: Convert to fraction form
   17,144.42/25,719.83 = 7,785.09/x
3. Step 3: Cross multiply
   17,144.42x = 25,719.83 × 7,785.09
4. Step 4: Simplify right side
   17,144.42x = 200,231,152.41
5. Step 5: Solve for x
   x = 200,231,152.41/17,144.42
6. Step 6: Final answer
   x = 11,679.09