Finding the Fourth Proportional to 12,404.63, 18,608.06 and 3,520.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.63 : 18,608.06 = 3,520.04 : x
2. Step 2: Convert to fraction form
   12,404.63/18,608.06 = 3,520.04/x
3. Step 3: Cross multiply
   12,404.63x = 18,608.06 × 3,520.04
4. Step 4: Simplify right side
   12,404.63x = 65,501,004.88
5. Step 5: Solve for x
   x = 65,501,004.88/12,404.63
6. Step 6: Final answer
   x = 5,280.37