Finding the Fourth Proportional to 13,119.51, 18,105.35 and 7,454.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,119.51 : 18,105.35 = 7,454.16 : x
2. Step 2: Convert to fraction form
   13,119.51/18,105.35 = 7,454.16/x
3. Step 3: Cross multiply
   13,119.51x = 18,105.35 × 7,454.16
4. Step 4: Simplify right side
   13,119.51x = 134,960,175.76
5. Step 5: Solve for x
   x = 134,960,175.76/13,119.51
6. Step 6: Final answer
   x = 10,286.98