Finding the Fourth Proportional to 10,909.56, 16,364.22 and 3,984

Step by Step Solution

1. Step 1: Write the proportion equation
   10,909.56 : 16,364.22 = 3,984 : x
2. Step 2: Convert to fraction form
   10,909.56/16,364.22 = 3,984/x
3. Step 3: Cross multiply
   10,909.56x = 16,364.22 × 3,984
4. Step 4: Simplify right side
   10,909.56x = 65,195,052.48
5. Step 5: Solve for x
   x = 65,195,052.48/10,909.56
6. Step 6: Final answer
   x = 5,975.96