Finding the Fourth Proportional to 10,853.88, 16,259.78 and 7,144.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,853.88 : 16,259.78 = 7,144.94 : x
2. Step 2: Convert to fraction form
   10,853.88/16,259.78 = 7,144.94/x
3. Step 3: Cross multiply
   10,853.88x = 16,259.78 × 7,144.94
4. Step 4: Simplify right side
   10,853.88x = 116,175,035.49
5. Step 5: Solve for x
   x = 116,175,035.49/10,853.88
6. Step 6: Final answer
   x = 10,703.55