Finding the Fourth Proportional to 6,515.76, 8,991.32 and 3,683.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,515.76 : 8,991.32 = 3,683.30 : x
2. Step 2: Convert to fraction form
   6,515.76/8,991.32 = 3,683.30/x
3. Step 3: Cross multiply
   6,515.76x = 8,991.32 × 3,683.30
4. Step 4: Simplify right side
   6,515.76x = 33,117,665.58
5. Step 5: Solve for x
   x = 33,117,665.58/6,515.76
6. Step 6: Final answer
   x = 5,082.70