Finding the Fourth Proportional to 13,542.54, 18,688.98 and 7,573.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,542.54 : 18,688.98 = 7,573.56 : x
2. Step 2: Convert to fraction form
   13,542.54/18,688.98 = 7,573.56/x
3. Step 3: Cross multiply
   13,542.54x = 18,688.98 × 7,573.56
4. Step 4: Simplify right side
   13,542.54x = 141,542,111.37
5. Step 5: Solve for x
   x = 141,542,111.37/13,542.54
6. Step 6: Final answer
   x = 10,451.67