Finding the Fourth Proportional to 12,894.74, 17,790.82 and 8,350.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,894.74 : 17,790.82 = 8,350.23 : x
2. Step 2: Convert to fraction form
   12,894.74/17,790.82 = 8,350.23/x
3. Step 3: Cross multiply
   12,894.74x = 17,790.82 × 8,350.23
4. Step 4: Simplify right side
   12,894.74x = 148,557,438.89
5. Step 5: Solve for x
   x = 148,557,438.89/12,894.74
6. Step 6: Final answer
   x = 11,520.78