Finding the Fourth Proportional to 10,986.53, 16,480.56 and 4,412.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,986.53 : 16,480.56 = 4,412.71 : x
2. Step 2: Convert to fraction form
   10,986.53/16,480.56 = 4,412.71/x
3. Step 3: Cross multiply
   10,986.53x = 16,480.56 × 4,412.71
4. Step 4: Simplify right side
   10,986.53x = 72,723,931.83
5. Step 5: Solve for x
   x = 72,723,931.83/10,986.53
6. Step 6: Final answer
   x = 6,619.37