Finding the Fourth Proportional to 13,078.89, 18,047.34 and 7,414.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,078.89 : 18,047.34 = 7,414.29 : x
2. Step 2: Convert to fraction form
   13,078.89/18,047.34 = 7,414.29/x
3. Step 3: Cross multiply
   13,078.89x = 18,047.34 × 7,414.29
4. Step 4: Simplify right side
   13,078.89x = 133,808,212.49
5. Step 5: Solve for x
   x = 133,808,212.49/13,078.89
6. Step 6: Final answer
   x = 10,230.85