Finding the Fourth Proportional to 22,057, 30,440.87 and 13,106.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,057 : 30,440.87 = 13,106.50 : x
2. Step 2: Convert to fraction form
   22,057/30,440.87 = 13,106.50/x
3. Step 3: Cross multiply
   22,057x = 30,440.87 × 13,106.50
4. Step 4: Simplify right side
   22,057x = 398,973,262.66
5. Step 5: Solve for x
   x = 398,973,262.66/22,057
6. Step 6: Final answer
   x = 18,088.28