Finding the Fourth Proportional to 13,469.49, 18,587.90 and 7,502.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,469.49 : 18,587.90 = 7,502.31 : x
2. Step 2: Convert to fraction form
   13,469.49/18,587.90 = 7,502.31/x
3. Step 3: Cross multiply
   13,469.49x = 18,587.90 × 7,502.31
4. Step 4: Simplify right side
   13,469.49x = 139,452,150.54
5. Step 5: Solve for x
   x = 139,452,150.54/13,469.49
6. Step 6: Final answer
   x = 10,353.19