Finding the Fourth Proportional to 6,139.76, 9,211.91 and 3,676.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,139.76 : 9,211.91 = 3,676.30 : x
2. Step 2: Convert to fraction form
   6,139.76/9,211.91 = 3,676.30/x
3. Step 3: Cross multiply
   6,139.76x = 9,211.91 × 3,676.30
4. Step 4: Simplify right side
   6,139.76x = 33,865,744.73
5. Step 5: Solve for x
   x = 33,865,744.73/6,139.76
6. Step 6: Final answer
   x = 5,515.81