Finding the Fourth Proportional to 13,442.67, 20,162.49 and 3,582.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,442.67 : 20,162.49 = 3,582.81 : x
2. Step 2: Convert to fraction form
   13,442.67/20,162.49 = 3,582.81/x
3. Step 3: Cross multiply
   13,442.67x = 20,162.49 × 3,582.81
4. Step 4: Simplify right side
   13,442.67x = 72,238,370.80
5. Step 5: Solve for x
   x = 72,238,370.80/13,442.67
6. Step 6: Final answer
   x = 5,373.81