Finding the Fourth Proportional to 9,764.72, 14,647.77 and 3,921.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,764.72 : 14,647.77 = 3,921.33 : x
2. Step 2: Convert to fraction form
   9,764.72/14,647.77 = 3,921.33/x
3. Step 3: Cross multiply
   9,764.72x = 14,647.77 × 3,921.33
4. Step 4: Simplify right side
   9,764.72x = 57,438,739.93
5. Step 5: Solve for x
   x = 57,438,739.93/9,764.72
6. Step 6: Final answer
   x = 5,882.27