Finding the Fourth Proportional to 12,773.38, 17,617.28 and 8,298.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,773.38 : 17,617.28 = 8,298.57 : x
2. Step 2: Convert to fraction form
   12,773.38/17,617.28 = 8,298.57/x
3. Step 3: Cross multiply
   12,773.38x = 17,617.28 × 8,298.57
4. Step 4: Simplify right side
   12,773.38x = 146,198,206.31
5. Step 5: Solve for x
   x = 146,198,206.31/12,773.38
6. Step 6: Final answer
   x = 11,445.54