Finding the Fourth Proportional to 12,314.02, 18,464.55 and 8,419.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,314.02 : 18,464.55 = 8,419.54 : x
2. Step 2: Convert to fraction form
   12,314.02/18,464.55 = 8,419.54/x
3. Step 3: Cross multiply
   12,314.02x = 18,464.55 × 8,419.54
4. Step 4: Simplify right side
   12,314.02x = 155,463,017.31
5. Step 5: Solve for x
   x = 155,463,017.31/12,314.02
6. Step 6: Final answer
   x = 12,624.88