Finding the Fourth Proportional to 8,826.72, 13,228.20 and 3,629.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,826.72 : 13,228.20 = 3,629.76 : x
2. Step 2: Convert to fraction form
   8,826.72/13,228.20 = 3,629.76/x
3. Step 3: Cross multiply
   8,826.72x = 13,228.20 × 3,629.76
4. Step 4: Simplify right side
   8,826.72x = 48,015,191.23
5. Step 5: Solve for x
   x = 48,015,191.23/8,826.72
6. Step 6: Final answer
   x = 5,439.75