Finding the Fourth Proportional to 13,452.79, 18,563.55 and 7,786.41

Step by Step Solution

1. Step 1: Write the proportion equation
   13,452.79 : 18,563.55 = 7,786.41 : x
2. Step 2: Convert to fraction form
   13,452.79/18,563.55 = 7,786.41/x
3. Step 3: Cross multiply
   13,452.79x = 18,563.55 × 7,786.41
4. Step 4: Simplify right side
   13,452.79x = 144,543,482.66
5. Step 5: Solve for x
   x = 144,543,482.66/13,452.79
6. Step 6: Final answer
   x = 10,744.50