Finding the Fourth Proportional to 8,345.12, 11,525.72 and 5,687.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,345.12 : 11,525.72 = 5,687.96 : x
2. Step 2: Convert to fraction form
   8,345.12/11,525.72 = 5,687.96/x
3. Step 3: Cross multiply
   8,345.12x = 11,525.72 × 5,687.96
4. Step 4: Simplify right side
   8,345.12x = 65,557,834.33
5. Step 5: Solve for x
   x = 65,557,834.33/8,345.12
6. Step 6: Final answer
   x = 7,855.83