Finding the Fourth Proportional to 12,616.32, 17,401.20 and 9,258

Step by Step Solution

1. Step 1: Write the proportion equation
   12,616.32 : 17,401.20 = 9,258 : x
2. Step 2: Convert to fraction form
   12,616.32/17,401.20 = 9,258/x
3. Step 3: Cross multiply
   12,616.32x = 17,401.20 × 9,258
4. Step 4: Simplify right side
   12,616.32x = 161,100,309.60
5. Step 5: Solve for x
   x = 161,100,309.60/12,616.32
6. Step 6: Final answer
   x = 12,769.20