Finding the Fourth Proportional to 12,676.29, 19,017.68 and 5,278.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,676.29 : 19,017.68 = 5,278.29 : x
2. Step 2: Convert to fraction form
   12,676.29/19,017.68 = 5,278.29/x
3. Step 3: Cross multiply
   12,676.29x = 19,017.68 × 5,278.29
4. Step 4: Simplify right side
   12,676.29x = 100,380,830.17
5. Step 5: Solve for x
   x = 100,380,830.17/12,676.29
6. Step 6: Final answer
   x = 7,918.79