Finding the Fourth Proportional to 13,078.89, 18,053.42 and 8,046.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,078.89 : 18,053.42 = 8,046.63 : x
2. Step 2: Convert to fraction form
   13,078.89/18,053.42 = 8,046.63/x
3. Step 3: Cross multiply
   13,078.89x = 18,053.42 × 8,046.63
4. Step 4: Simplify right side
   13,078.89x = 145,269,150.74
5. Step 5: Solve for x
   x = 145,269,150.74/13,078.89
6. Step 6: Final answer
   x = 11,107.15