Finding the Fourth Proportional to 10,722.81, 16,074.96 and 5,180.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,722.81 : 16,074.96 = 5,180.04 : x
2. Step 2: Convert to fraction form
   10,722.81/16,074.96 = 5,180.04/x
3. Step 3: Cross multiply
   10,722.81x = 16,074.96 × 5,180.04
4. Step 4: Simplify right side
   10,722.81x = 83,268,935.80
5. Step 5: Solve for x
   x = 83,268,935.80/10,722.81
6. Step 6: Final answer
   x = 7,765.59