Finding the Fourth Proportional to 12,763.62, 17,608.77 and 9,414.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,763.62 : 17,608.77 = 9,414.50 : x
2. Step 2: Convert to fraction form
   12,763.62/17,608.77 = 9,414.50/x
3. Step 3: Cross multiply
   12,763.62x = 17,608.77 × 9,414.50
4. Step 4: Simplify right side
   12,763.62x = 165,777,677.12
5. Step 5: Solve for x
   x = 165,777,677.12/12,763.62
6. Step 6: Final answer
   x = 12,988.30