Finding the Fourth Proportional to 8,776.64, 13,151.52 and 3,581.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,776.64 : 13,151.52 = 3,581.12 : x
2. Step 2: Convert to fraction form
   8,776.64/13,151.52 = 3,581.12/x
3. Step 3: Cross multiply
   8,776.64x = 13,151.52 × 3,581.12
4. Step 4: Simplify right side
   8,776.64x = 47,097,171.30
5. Step 5: Solve for x
   x = 47,097,171.30/8,776.64
6. Step 6: Final answer
   x = 5,366.20