Finding the Fourth Proportional to 8,647.56, 12,976.59 and 3,453

Step by Step Solution

1. Step 1: Write the proportion equation
   8,647.56 : 12,976.59 = 3,453 : x
2. Step 2: Convert to fraction form
   8,647.56/12,976.59 = 3,453/x
3. Step 3: Cross multiply
   8,647.56x = 12,976.59 × 3,453
4. Step 4: Simplify right side
   8,647.56x = 44,808,165.27
5. Step 5: Solve for x
   x = 44,808,165.27/8,647.56
6. Step 6: Final answer
   x = 5,181.60