Finding the Fourth Proportional to 18,826.50, 25,981.38 and 10,443

Step by Step Solution

1. Step 1: Write the proportion equation
   18,826.50 : 25,981.38 = 10,443 : x
2. Step 2: Convert to fraction form
   18,826.50/25,981.38 = 10,443/x
3. Step 3: Cross multiply
   18,826.50x = 25,981.38 × 10,443
4. Step 4: Simplify right side
   18,826.50x = 271,323,551.34
5. Step 5: Solve for x
   x = 271,323,551.34/18,826.50
6. Step 6: Final answer
   x = 14,411.79