Finding the Fourth Proportional to 21,881.30, 32,838.15 and 8,743.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,881.30 : 32,838.15 = 8,743.10 : x
2. Step 2: Convert to fraction form
   21,881.30/32,838.15 = 8,743.10/x
3. Step 3: Cross multiply
   21,881.30x = 32,838.15 × 8,743.10
4. Step 4: Simplify right side
   21,881.30x = 287,107,229.27
5. Step 5: Solve for x
   x = 287,107,229.27/21,881.30
6. Step 6: Final answer
   x = 13,121.12