Finding the Fourth Proportional to 8,676.30, 13,012.50 and 3,991.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,676.30 : 13,012.50 = 3,991.82 : x
2. Step 2: Convert to fraction form
   8,676.30/13,012.50 = 3,991.82/x
3. Step 3: Cross multiply
   8,676.30x = 13,012.50 × 3,991.82
4. Step 4: Simplify right side
   8,676.30x = 51,943,492.69
5. Step 5: Solve for x
   x = 51,943,492.69/8,676.30
6. Step 6: Final answer
   x = 5,986.83