Finding the Fourth Proportional to 14,105.72, 21,161.56 and 5,340.44

Step by Step Solution

1. Step 1: Write the proportion equation
   14,105.72 : 21,161.56 = 5,340.44 : x
2. Step 2: Convert to fraction form
   14,105.72/21,161.56 = 5,340.44/x
3. Step 3: Cross multiply
   14,105.72x = 21,161.56 × 5,340.44
4. Step 4: Simplify right side
   14,105.72x = 113,012,041.49
5. Step 5: Solve for x
   x = 113,012,041.49/14,105.72
6. Step 6: Final answer
   x = 8,011.79