Finding the Fourth Proportional to 10,932.56, 16,390.56 and 3,908.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,932.56 : 16,390.56 = 3,908.24 : x
2. Step 2: Convert to fraction form
   10,932.56/16,390.56 = 3,908.24/x
3. Step 3: Cross multiply
   10,932.56x = 16,390.56 × 3,908.24
4. Step 4: Simplify right side
   10,932.56x = 64,058,242.21
5. Step 5: Solve for x
   x = 64,058,242.21/10,932.56
6. Step 6: Final answer
   x = 5,859.40