Finding the Fourth Proportional to 13,503.72, 18,636.04 and 7,536.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,503.72 : 18,636.04 = 7,536.54 : x
2. Step 2: Convert to fraction form
   13,503.72/18,636.04 = 7,536.54/x
3. Step 3: Cross multiply
   13,503.72x = 18,636.04 × 7,536.54
4. Step 4: Simplify right side
   13,503.72x = 140,451,260.90
5. Step 5: Solve for x
   x = 140,451,260.90/13,503.72
6. Step 6: Final answer
   x = 10,400.93