Finding the Fourth Proportional to 8,438.52, 12,648.42 and 3,505.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,438.52 : 12,648.42 = 3,505.56 : x
2. Step 2: Convert to fraction form
   8,438.52/12,648.42 = 3,505.56/x
3. Step 3: Cross multiply
   8,438.52x = 12,648.42 × 3,505.56
4. Step 4: Simplify right side
   8,438.52x = 44,339,795.22
5. Step 5: Solve for x
   x = 44,339,795.22/8,438.52
6. Step 6: Final answer
   x = 5,254.45