Finding the Fourth Proportional to 5,513.15, 7,608.30 and 3,156.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,513.15 : 7,608.30 = 3,156.05 : x
2. Step 2: Convert to fraction form
   5,513.15/7,608.30 = 3,156.05/x
3. Step 3: Cross multiply
   5,513.15x = 7,608.30 × 3,156.05
4. Step 4: Simplify right side
   5,513.15x = 24,012,182.40
5. Step 5: Solve for x
   x = 24,012,182.40/5,513.15
6. Step 6: Final answer
   x = 4,355.44