Finding the Fourth Proportional to 13,518.75, 18,655.83 and 7,550.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,518.75 : 18,655.83 = 7,550.42 : x
2. Step 2: Convert to fraction form
   13,518.75/18,655.83 = 7,550.42/x
3. Step 3: Cross multiply
   13,518.75x = 18,655.83 × 7,550.42
4. Step 4: Simplify right side
   13,518.75x = 140,859,370.82
5. Step 5: Solve for x
   x = 140,859,370.82/13,518.75
6. Step 6: Final answer
   x = 10,419.56