Finding the Fourth Proportional to 13,103.83, 18,081.25 and 7,513.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,103.83 : 18,081.25 = 7,513.75 : x
2. Step 2: Convert to fraction form
   13,103.83/18,081.25 = 7,513.75/x
3. Step 3: Cross multiply
   13,103.83x = 18,081.25 × 7,513.75
4. Step 4: Simplify right side
   13,103.83x = 135,857,992.19
5. Step 5: Solve for x
   x = 135,857,992.19/13,103.83
6. Step 6: Final answer
   x = 10,367.81