Finding the Fourth Proportional to 19,719.30, 27,143.58 and 17,196.96

Step by Step Solution

1. Step 1: Write the proportion equation
   19,719.30 : 27,143.58 = 17,196.96 : x
2. Step 2: Convert to fraction form
   19,719.30/27,143.58 = 17,196.96/x
3. Step 3: Cross multiply
   19,719.30x = 27,143.58 × 17,196.96
4. Step 4: Simplify right side
   19,719.30x = 466,787,059.52
5. Step 5: Solve for x
   x = 466,787,059.52/19,719.30
6. Step 6: Final answer
   x = 23,671.58