Finding the Fourth Proportional to 13,422.18, 20,131.71 and 3,562.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,422.18 : 20,131.71 = 3,562.23 : x
2. Step 2: Convert to fraction form
   13,422.18/20,131.71 = 3,562.23/x
3. Step 3: Cross multiply
   13,422.18x = 20,131.71 × 3,562.23
4. Step 4: Simplify right side
   13,422.18x = 71,713,760.26
5. Step 5: Solve for x
   x = 71,713,760.26/13,422.18
6. Step 6: Final answer
   x = 5,342.93