Finding the Fourth Proportional to 16,766.19, 23,137.25 and 9,109.40

Step by Step Solution

1. Step 1: Write the proportion equation
   16,766.19 : 23,137.25 = 9,109.40 : x
2. Step 2: Convert to fraction form
   16,766.19/23,137.25 = 9,109.40/x
3. Step 3: Cross multiply
   16,766.19x = 23,137.25 × 9,109.40
4. Step 4: Simplify right side
   16,766.19x = 210,766,465.15
5. Step 5: Solve for x
   x = 210,766,465.15/16,766.19
6. Step 6: Final answer
   x = 12,570.92