Finding the Fourth Proportional to 13,504.72, 18,636.47 and 7,536.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,504.72 : 18,636.47 = 7,536.32 : x
2. Step 2: Convert to fraction form
   13,504.72/18,636.47 = 7,536.32/x
3. Step 3: Cross multiply
   13,504.72x = 18,636.47 × 7,536.32
4. Step 4: Simplify right side
   13,504.72x = 140,450,401.59
5. Step 5: Solve for x
   x = 140,450,401.59/13,504.72
6. Step 6: Final answer
   x = 10,400.10