Finding the Fourth Proportional to 34,018.42, 51,021.48 and 12,667.15

Step by Step Solution

1. Step 1: Write the proportion equation
   34,018.42 : 51,021.48 = 12,667.15 : x
2. Step 2: Convert to fraction form
   34,018.42/51,021.48 = 12,667.15/x
3. Step 3: Cross multiply
   34,018.42x = 51,021.48 × 12,667.15
4. Step 4: Simplify right side
   34,018.42x = 646,296,740.38
5. Step 5: Solve for x
   x = 646,296,740.38/34,018.42
6. Step 6: Final answer
   x = 18,998.43