Finding the Fourth Proportional to 16,103.26, 22,211.25 and 15,561.37

Step by Step Solution

1. Step 1: Write the proportion equation
   16,103.26 : 22,211.25 = 15,561.37 : x
2. Step 2: Convert to fraction form
   16,103.26/22,211.25 = 15,561.37/x
3. Step 3: Cross multiply
   16,103.26x = 22,211.25 × 15,561.37
4. Step 4: Simplify right side
   16,103.26x = 345,637,453.06
5. Step 5: Solve for x
   x = 345,637,453.06/16,103.26
6. Step 6: Final answer
   x = 21,463.82