Finding the Fourth Proportional to 12,404.60, 18,607.46 and 3,520.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.60 : 18,607.46 = 3,520.56 : x
2. Step 2: Convert to fraction form
   12,404.60/18,607.46 = 3,520.56/x
3. Step 3: Cross multiply
   12,404.60x = 18,607.46 × 3,520.56
4. Step 4: Simplify right side
   12,404.60x = 65,508,679.38
5. Step 5: Solve for x
   x = 65,508,679.38/12,404.60
6. Step 6: Final answer
   x = 5,281.00