Finding the Fourth Proportional to 13,107.69, 18,089.33 and 7,518.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,107.69 : 18,089.33 = 7,518.69 : x
2. Step 2: Convert to fraction form
   13,107.69/18,089.33 = 7,518.69/x
3. Step 3: Cross multiply
   13,107.69x = 18,089.33 × 7,518.69
4. Step 4: Simplify right side
   13,107.69x = 136,008,026.98
5. Step 5: Solve for x
   x = 136,008,026.98/13,107.69
6. Step 6: Final answer
   x = 10,376.20