Finding the Fourth Proportional to 22,406, 30,920.82 and 13,453.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,406 : 30,920.82 = 13,453.88 : x
2. Step 2: Convert to fraction form
   22,406/30,920.82 = 13,453.88/x
3. Step 3: Cross multiply
   22,406x = 30,920.82 × 13,453.88
4. Step 4: Simplify right side
   22,406x = 416,005,001.78
5. Step 5: Solve for x
   x = 416,005,001.78/22,406
6. Step 6: Final answer
   x = 18,566.68