Finding the Fourth Proportional to 10,685.48, 16,038.18 and 5,424.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,685.48 : 16,038.18 = 5,424.22 : x
2. Step 2: Convert to fraction form
   10,685.48/16,038.18 = 5,424.22/x
3. Step 3: Cross multiply
   10,685.48x = 16,038.18 × 5,424.22
4. Step 4: Simplify right side
   10,685.48x = 86,994,616.72
5. Step 5: Solve for x
   x = 86,994,616.72/10,685.48
6. Step 6: Final answer
   x = 8,141.39