Finding the Fourth Proportional to 12,734.17, 17,581.71 and 9,380.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,734.17 : 17,581.71 = 9,380.77 : x
2. Step 2: Convert to fraction form
   12,734.17/17,581.71 = 9,380.77/x
3. Step 3: Cross multiply
   12,734.17x = 17,581.71 × 9,380.77
4. Step 4: Simplify right side
   12,734.17x = 164,929,977.72
5. Step 5: Solve for x
   x = 164,929,977.72/12,734.17
6. Step 6: Final answer
   x = 12,951.77