Finding the Fourth Proportional to 17,141.39, 25,719.76 and 10,899.79

Step by Step Solution

1. Step 1: Write the proportion equation
   17,141.39 : 25,719.76 = 10,899.79 : x
2. Step 2: Convert to fraction form
   17,141.39/25,719.76 = 10,899.79/x
3. Step 3: Cross multiply
   17,141.39x = 25,719.76 × 10,899.79
4. Step 4: Simplify right side
   17,141.39x = 280,339,932.18
5. Step 5: Solve for x
   x = 280,339,932.18/17,141.39
6. Step 6: Final answer
   x = 16,354.56