Finding the Fourth Proportional to 21,867.76, 30,196.56 and 17,143.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,867.76 : 30,196.56 = 17,143.84 : x
2. Step 2: Convert to fraction form
   21,867.76/30,196.56 = 17,143.84/x
3. Step 3: Cross multiply
   21,867.76x = 30,196.56 × 17,143.84
4. Step 4: Simplify right side
   21,867.76x = 517,684,993.19
5. Step 5: Solve for x
   x = 517,684,993.19/21,867.76
6. Step 6: Final answer
   x = 23,673.43