Finding the Fourth Proportional to 13,053.69, 18,005.90 and 7,744.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,053.69 : 18,005.90 = 7,744.75 : x
2. Step 2: Convert to fraction form
   13,053.69/18,005.90 = 7,744.75/x
3. Step 3: Cross multiply
   13,053.69x = 18,005.90 × 7,744.75
4. Step 4: Simplify right side
   13,053.69x = 139,451,194.03
5. Step 5: Solve for x
   x = 139,451,194.03/13,053.69
6. Step 6: Final answer
   x = 10,682.89