Finding the Fourth Proportional to 12,434.78, 18,648.30 and 4,112.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,434.78 : 18,648.30 = 4,112.94 : x
2. Step 2: Convert to fraction form
   12,434.78/18,648.30 = 4,112.94/x
3. Step 3: Cross multiply
   12,434.78x = 18,648.30 × 4,112.94
4. Step 4: Simplify right side
   12,434.78x = 76,699,339.00
5. Step 5: Solve for x
   x = 76,699,339.00/12,434.78
6. Step 6: Final answer
   x = 6,168.13