Finding the Fourth Proportional to 22,065.43, 30,454.72 and 13,111.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,065.43 : 30,454.72 = 13,111.21 : x
2. Step 2: Convert to fraction form
   22,065.43/30,454.72 = 13,111.21/x
3. Step 3: Cross multiply
   22,065.43x = 30,454.72 × 13,111.21
4. Step 4: Simplify right side
   22,065.43x = 399,298,229.41
5. Step 5: Solve for x
   x = 399,298,229.41/22,065.43
6. Step 6: Final answer
   x = 18,096.10