Finding the Fourth Proportional to 13,109.36, 18,086.46 and 7,443.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.36 : 18,086.46 = 7,443.52 : x
2. Step 2: Convert to fraction form
   13,109.36/18,086.46 = 7,443.52/x
3. Step 3: Cross multiply
   13,109.36x = 18,086.46 × 7,443.52
4. Step 4: Simplify right side
   13,109.36x = 134,626,926.74
5. Step 5: Solve for x
   x = 134,626,926.74/13,109.36
6. Step 6: Final answer
   x = 10,269.53