Finding the Fourth Proportional to 12,345.42, 18,519.15 and 4,025.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,345.42 : 18,519.15 = 4,025.25 : x
2. Step 2: Convert to fraction form
   12,345.42/18,519.15 = 4,025.25/x
3. Step 3: Cross multiply
   12,345.42x = 18,519.15 × 4,025.25
4. Step 4: Simplify right side
   12,345.42x = 74,544,208.54
5. Step 5: Solve for x
   x = 74,544,208.54/12,345.42
6. Step 6: Final answer
   x = 6,038.21