Finding the Fourth Proportional to 12,488.43, 17,222.61 and 9,763.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.43 : 17,222.61 = 9,763.32 : x
2. Step 2: Convert to fraction form
   12,488.43/17,222.61 = 9,763.32/x
3. Step 3: Cross multiply
   12,488.43x = 17,222.61 × 9,763.32
4. Step 4: Simplify right side
   12,488.43x = 168,149,852.67
5. Step 5: Solve for x
   x = 168,149,852.67/12,488.43
6. Step 6: Final answer
   x = 13,464.45