Finding the Fourth Proportional to 10,932.28, 16,392.76 and 3,909.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,932.28 : 16,392.76 = 3,909.60 : x
2. Step 2: Convert to fraction form
   10,932.28/16,392.76 = 3,909.60/x
3. Step 3: Cross multiply
   10,932.28x = 16,392.76 × 3,909.60
4. Step 4: Simplify right side
   10,932.28x = 64,089,134.50
5. Step 5: Solve for x
   x = 64,089,134.50/10,932.28
6. Step 6: Final answer
   x = 5,862.38