Finding the Fourth Proportional to 12,315.78, 18,462.60 and 4,523.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.78 : 18,462.60 = 4,523.04 : x
2. Step 2: Convert to fraction form
   12,315.78/18,462.60 = 4,523.04/x
3. Step 3: Cross multiply
   12,315.78x = 18,462.60 × 4,523.04
4. Step 4: Simplify right side
   12,315.78x = 83,507,078.30
5. Step 5: Solve for x
   x = 83,507,078.30/12,315.78
6. Step 6: Final answer
   x = 6,780.49