Finding the Fourth Proportional to 22,374.80, 30,871.72 and 13,422.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,374.80 : 30,871.72 = 13,422.96 : x
2. Step 2: Convert to fraction form
   22,374.80/30,871.72 = 13,422.96/x
3. Step 3: Cross multiply
   22,374.80x = 30,871.72 × 13,422.96
4. Step 4: Simplify right side
   22,374.80x = 414,389,862.69
5. Step 5: Solve for x
   x = 414,389,862.69/22,374.80
6. Step 6: Final answer
   x = 18,520.38