Finding the Fourth Proportional to 13,078.18, 18,044.40 and 7,411.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,078.18 : 18,044.40 = 7,411.69 : x
2. Step 2: Convert to fraction form
   13,078.18/18,044.40 = 7,411.69/x
3. Step 3: Cross multiply
   13,078.18x = 18,044.40 × 7,411.69
4. Step 4: Simplify right side
   13,078.18x = 133,739,499.04
5. Step 5: Solve for x
   x = 133,739,499.04/13,078.18
6. Step 6: Final answer
   x = 10,226.16