Finding the Fourth Proportional to 13,456.18, 18,569.52 and 7,488.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,456.18 : 18,569.52 = 7,488.23 : x
2. Step 2: Convert to fraction form
   13,456.18/18,569.52 = 7,488.23/x
3. Step 3: Cross multiply
   13,456.18x = 18,569.52 × 7,488.23
4. Step 4: Simplify right side
   13,456.18x = 139,052,836.75
5. Step 5: Solve for x
   x = 139,052,836.75/13,456.18
6. Step 6: Final answer
   x = 10,333.75