Finding the Fourth Proportional to 22,128.40, 30,536.04 and 13,744.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,128.40 : 30,536.04 = 13,744.72 : x
2. Step 2: Convert to fraction form
   22,128.40/30,536.04 = 13,744.72/x
3. Step 3: Cross multiply
   22,128.40x = 30,536.04 × 13,744.72
4. Step 4: Simplify right side
   22,128.40x = 419,709,319.71
5. Step 5: Solve for x
   x = 419,709,319.71/22,128.40
6. Step 6: Final answer
   x = 18,967.00