Finding the Fourth Proportional to 13,510.60, 18,644.59 and 7,542.22

Step by Step Solution

1. Step 1: Write the proportion equation
   13,510.60 : 18,644.59 = 7,542.22 : x
2. Step 2: Convert to fraction form
   13,510.60/18,644.59 = 7,542.22/x
3. Step 3: Cross multiply
   13,510.60x = 18,644.59 × 7,542.22
4. Step 4: Simplify right side
   13,510.60x = 140,621,599.59
5. Step 5: Solve for x
   x = 140,621,599.59/13,510.60
6. Step 6: Final answer
   x = 10,408.24