Finding the Fourth Proportional to 8,645.72, 11,930.42 and 5,108.26

Step by Step Solution

1. Step 1: Write the proportion equation
   8,645.72 : 11,930.42 = 5,108.26 : x
2. Step 2: Convert to fraction form
   8,645.72/11,930.42 = 5,108.26/x
3. Step 3: Cross multiply
   8,645.72x = 11,930.42 × 5,108.26
4. Step 4: Simplify right side
   8,645.72x = 60,943,687.27
5. Step 5: Solve for x
   x = 60,943,687.27/8,645.72
6. Step 6: Final answer
   x = 7,049.00