Finding the Fourth Proportional to 12,919, 17,825.46 and 7,611.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,919 : 17,825.46 = 7,611.88 : x
2. Step 2: Convert to fraction form
   12,919/17,825.46 = 7,611.88/x
3. Step 3: Cross multiply
   12,919x = 17,825.46 × 7,611.88
4. Step 4: Simplify right side
   12,919x = 135,685,262.46
5. Step 5: Solve for x
   x = 135,685,262.46/12,919
6. Step 6: Final answer
   x = 10,502.77