Finding the Fourth Proportional to 9,321.24, 13,986.72 and 3,778.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,321.24 : 13,986.72 = 3,778.68 : x
2. Step 2: Convert to fraction form
   9,321.24/13,986.72 = 3,778.68/x
3. Step 3: Cross multiply
   9,321.24x = 13,986.72 × 3,778.68
4. Step 4: Simplify right side
   9,321.24x = 52,851,339.13
5. Step 5: Solve for x
   x = 52,851,339.13/9,321.24
6. Step 6: Final answer
   x = 5,669.99