Finding the Fourth Proportional to 11,763.98, 17,630.39 and 8,629.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,763.98 : 17,630.39 = 8,629.31 : x
2. Step 2: Convert to fraction form
   11,763.98/17,630.39 = 8,629.31/x
3. Step 3: Cross multiply
   11,763.98x = 17,630.39 × 8,629.31
4. Step 4: Simplify right side
   11,763.98x = 152,138,100.73
5. Step 5: Solve for x
   x = 152,138,100.73/11,763.98
6. Step 6: Final answer
   x = 12,932.54