Finding the Fourth Proportional to 12,938.05, 17,849.32 and 9,393.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,938.05 : 17,849.32 = 9,393.49 : x
2. Step 2: Convert to fraction form
   12,938.05/17,849.32 = 9,393.49/x
3. Step 3: Cross multiply
   12,938.05x = 17,849.32 × 9,393.49
4. Step 4: Simplify right side
   12,938.05x = 167,667,408.93
5. Step 5: Solve for x
   x = 167,667,408.93/12,938.05
6. Step 6: Final answer
   x = 12,959.25