Finding the Fourth Proportional to 13,456.58, 18,570.04 and 7,488.11

Step by Step Solution

1. Step 1: Write the proportion equation
   13,456.58 : 18,570.04 = 7,488.11 : x
2. Step 2: Convert to fraction form
   13,456.58/18,570.04 = 7,488.11/x
3. Step 3: Cross multiply
   13,456.58x = 18,570.04 × 7,488.11
4. Step 4: Simplify right side
   13,456.58x = 139,054,529.93
5. Step 5: Solve for x
   x = 139,054,529.93/13,456.58
6. Step 6: Final answer
   x = 10,333.58