Finding the Fourth Proportional to 13,456.48, 18,569.78 and 7,488

Step by Step Solution

1. Step 1: Write the proportion equation
   13,456.48 : 18,569.78 = 7,488 : x
2. Step 2: Convert to fraction form
   13,456.48/18,569.78 = 7,488/x
3. Step 3: Cross multiply
   13,456.48x = 18,569.78 × 7,488
4. Step 4: Simplify right side
   13,456.48x = 139,050,512.64
5. Step 5: Solve for x
   x = 139,050,512.64/13,456.48
6. Step 6: Final answer
   x = 10,333.35