Finding the Fourth Proportional to 10,676.49, 16,012.71 and 3,278.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,676.49 : 16,012.71 = 3,278.90 : x
2. Step 2: Convert to fraction form
   10,676.49/16,012.71 = 3,278.90/x
3. Step 3: Cross multiply
   10,676.49x = 16,012.71 × 3,278.90
4. Step 4: Simplify right side
   10,676.49x = 52,503,994.76
5. Step 5: Solve for x
   x = 52,503,994.76/10,676.49
6. Step 6: Final answer
   x = 4,917.72