Finding the Fourth Proportional to 13,456.82, 18,570.18 and 7,488.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,456.82 : 18,570.18 = 7,488.32 : x
2. Step 2: Convert to fraction form
   13,456.82/18,570.18 = 7,488.32/x
3. Step 3: Cross multiply
   13,456.82x = 18,570.18 × 7,488.32
4. Step 4: Simplify right side
   13,456.82x = 139,059,450.30
5. Step 5: Solve for x
   x = 139,059,450.30/13,456.82
6. Step 6: Final answer
   x = 10,333.75