Finding the Fourth Proportional to 13,105.74, 18,085.53 and 7,441.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,105.74 : 18,085.53 = 7,441.02 : x
2. Step 2: Convert to fraction form
   13,105.74/18,085.53 = 7,441.02/x
3. Step 3: Cross multiply
   13,105.74x = 18,085.53 × 7,441.02
4. Step 4: Simplify right side
   13,105.74x = 134,574,790.44
5. Step 5: Solve for x
   x = 134,574,790.44/13,105.74
6. Step 6: Final answer
   x = 10,268.39