Finding the Fourth Proportional to 10,162.20, 14,023.39 and 5,685.11

Step by Step Solution

1. Step 1: Write the proportion equation
   10,162.20 : 14,023.39 = 5,685.11 : x
2. Step 2: Convert to fraction form
   10,162.20/14,023.39 = 5,685.11/x
3. Step 3: Cross multiply
   10,162.20x = 14,023.39 × 5,685.11
4. Step 4: Simplify right side
   10,162.20x = 79,724,514.72
5. Step 5: Solve for x
   x = 79,724,514.72/10,162.20
6. Step 6: Final answer
   x = 7,845.20