Finding the Fourth Proportional to 13,456.44, 18,570.42 and 7,488.36

Step by Step Solution

1. Step 1: Write the proportion equation
   13,456.44 : 18,570.42 = 7,488.36 : x
2. Step 2: Convert to fraction form
   13,456.44/18,570.42 = 7,488.36/x
3. Step 3: Cross multiply
   13,456.44x = 18,570.42 × 7,488.36
4. Step 4: Simplify right side
   13,456.44x = 139,061,990.31
5. Step 5: Solve for x
   x = 139,061,990.31/13,456.44
6. Step 6: Final answer
   x = 10,334.23