Finding the Fourth Proportional to 9,865.02, 13,613.76 and 5,673

Step by Step Solution

1. Step 1: Write the proportion equation
   9,865.02 : 13,613.76 = 5,673 : x
2. Step 2: Convert to fraction form
   9,865.02/13,613.76 = 5,673/x
3. Step 3: Cross multiply
   9,865.02x = 13,613.76 × 5,673
4. Step 4: Simplify right side
   9,865.02x = 77,230,860.48
5. Step 5: Solve for x
   x = 77,230,860.48/9,865.02
6. Step 6: Final answer
   x = 7,828.76