Finding the Fourth Proportional to 16,705.50, 23,053.38 and 9,151.74

Step by Step Solution

1. Step 1: Write the proportion equation
   16,705.50 : 23,053.38 = 9,151.74 : x
2. Step 2: Convert to fraction form
   16,705.50/23,053.38 = 9,151.74/x
3. Step 3: Cross multiply
   16,705.50x = 23,053.38 × 9,151.74
4. Step 4: Simplify right side
   16,705.50x = 210,978,539.88
5. Step 5: Solve for x
   x = 210,978,539.88/16,705.50
6. Step 6: Final answer
   x = 12,629.29