Finding the Fourth Proportional to 16,623.06, 22,940.37 and 9,909.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,623.06 : 22,940.37 = 9,909.78 : x
2. Step 2: Convert to fraction form
   16,623.06/22,940.37 = 9,909.78/x
3. Step 3: Cross multiply
   16,623.06x = 22,940.37 × 9,909.78
4. Step 4: Simplify right side
   16,623.06x = 227,334,019.82
5. Step 5: Solve for x
   x = 227,334,019.82/16,623.06
6. Step 6: Final answer
   x = 13,675.82