Finding the Fourth Proportional to 8,354.51, 12,520.83 and 3,418.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,354.51 : 12,520.83 = 3,418.37 : x
2. Step 2: Convert to fraction form
   8,354.51/12,520.83 = 3,418.37/x
3. Step 3: Cross multiply
   8,354.51x = 12,520.83 × 3,418.37
4. Step 4: Simplify right side
   8,354.51x = 42,800,829.65
5. Step 5: Solve for x
   x = 42,800,829.65/8,354.51
6. Step 6: Final answer
   x = 5,123.08