Finding the Fourth Proportional to 13,073.88, 18,042.10 and 7,105.64

Step by Step Solution

1. Step 1: Write the proportion equation
   13,073.88 : 18,042.10 = 7,105.64 : x
2. Step 2: Convert to fraction form
   13,073.88/18,042.10 = 7,105.64/x
3. Step 3: Cross multiply
   13,073.88x = 18,042.10 × 7,105.64
4. Step 4: Simplify right side
   13,073.88x = 128,200,667.44
5. Step 5: Solve for x
   x = 128,200,667.44/13,073.88
6. Step 6: Final answer
   x = 9,805.86