Finding the Fourth Proportional to 16,391.00, 22,619.34 and 9,220.37

Step by Step Solution

1. Step 1: Write the proportion equation
   16,391.00 : 22,619.34 = 9,220.37 : x
2. Step 2: Convert to fraction form
   16,391.00/22,619.34 = 9,220.37/x
3. Step 3: Cross multiply
   16,391.00x = 22,619.34 × 9,220.37
4. Step 4: Simplify right side
   16,391.00x = 208,558,570.86
5. Step 5: Solve for x
   x = 208,558,570.86/16,391.00
6. Step 6: Final answer
   x = 12,723.97