Finding the Fourth Proportional to 16,776.77, 23,151.98 and 9,606.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,776.77 : 23,151.98 = 9,606.80 : x
2. Step 2: Convert to fraction form
   16,776.77/23,151.98 = 9,606.80/x
3. Step 3: Cross multiply
   16,776.77x = 23,151.98 × 9,606.80
4. Step 4: Simplify right side
   16,776.77x = 222,416,349.72
5. Step 5: Solve for x
   x = 222,416,349.72/16,776.77
6. Step 6: Final answer
   x = 13,257.40