Finding the Fourth Proportional to 9,864.75, 13,613.37 and 5,673

Step by Step Solution

1. Step 1: Write the proportion equation
   9,864.75 : 13,613.37 = 5,673 : x
2. Step 2: Convert to fraction form
   9,864.75/13,613.37 = 5,673/x
3. Step 3: Cross multiply
   9,864.75x = 13,613.37 × 5,673
4. Step 4: Simplify right side
   9,864.75x = 77,228,648.01
5. Step 5: Solve for x
   x = 77,228,648.01/9,864.75
6. Step 6: Final answer
   x = 7,828.75