Finding the Fourth Proportional to 21,871.27, 32,863.61 and 19,105.39

Step by Step Solution

1. Step 1: Write the proportion equation
   21,871.27 : 32,863.61 = 19,105.39 : x
2. Step 2: Convert to fraction form
   21,871.27/32,863.61 = 19,105.39/x
3. Step 3: Cross multiply
   21,871.27x = 32,863.61 × 19,105.39
4. Step 4: Simplify right side
   21,871.27x = 627,872,085.86
5. Step 5: Solve for x
   x = 627,872,085.86/21,871.27
6. Step 6: Final answer
   x = 28,707.62