Finding the Fourth Proportional to 5,916.56, 8,871.86 and 3,665.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,916.56 : 8,871.86 = 3,665.30 : x
2. Step 2: Convert to fraction form
   5,916.56/8,871.86 = 3,665.30/x
3. Step 3: Cross multiply
   5,916.56x = 8,871.86 × 3,665.30
4. Step 4: Simplify right side
   5,916.56x = 32,517,965.77
5. Step 5: Solve for x
   x = 32,517,965.77/5,916.56
6. Step 6: Final answer
   x = 5,496.10