Finding the Fourth Proportional to 16,765.88, 23,136.81 and 9,109.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,765.88 : 23,136.81 = 9,109.10 : x
2. Step 2: Convert to fraction form
   16,765.88/23,136.81 = 9,109.10/x
3. Step 3: Cross multiply
   16,765.88x = 23,136.81 × 9,109.10
4. Step 4: Simplify right side
   16,765.88x = 210,755,400.29
5. Step 5: Solve for x
   x = 210,755,400.29/16,765.88
6. Step 6: Final answer
   x = 12,570.50