Finding the Fourth Proportional to 13,510.98, 18,644.82 and 7,542.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,510.98 : 18,644.82 = 7,542.62 : x
2. Step 2: Convert to fraction form
   13,510.98/18,644.82 = 7,542.62/x
3. Step 3: Cross multiply
   13,510.98x = 18,644.82 × 7,542.62
4. Step 4: Simplify right side
   13,510.98x = 140,630,792.23
5. Step 5: Solve for x
   x = 140,630,792.23/13,510.98
6. Step 6: Final answer
   x = 10,408.63