Finding the Fourth Proportional to 13,456.88, 18,570.12 and 7,488.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,456.88 : 18,570.12 = 7,488.76 : x
2. Step 2: Convert to fraction form
   13,456.88/18,570.12 = 7,488.76/x
3. Step 3: Cross multiply
   13,456.88x = 18,570.12 × 7,488.76
4. Step 4: Simplify right side
   13,456.88x = 139,067,171.85
5. Step 5: Solve for x
   x = 139,067,171.85/13,456.88
6. Step 6: Final answer
   x = 10,334.28