Finding the Fourth Proportional to 16,713.89, 23,066.21 and 9,261.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,713.89 : 23,066.21 = 9,261.89 : x
2. Step 2: Convert to fraction form
   16,713.89/23,066.21 = 9,261.89/x
3. Step 3: Cross multiply
   16,713.89x = 23,066.21 × 9,261.89
4. Step 4: Simplify right side
   16,713.89x = 213,636,653.43
5. Step 5: Solve for x
   x = 213,636,653.43/16,713.89
6. Step 6: Final answer
   x = 12,781.98