Finding the Fourth Proportional to 7,141.64, 10,728.88 and 5,066.76

Step by Step Solution

1. Step 1: Write the proportion equation
   7,141.64 : 10,728.88 = 5,066.76 : x
2. Step 2: Convert to fraction form
   7,141.64/10,728.88 = 5,066.76/x
3. Step 3: Cross multiply
   7,141.64x = 10,728.88 × 5,066.76
4. Step 4: Simplify right side
   7,141.64x = 54,360,660.03
5. Step 5: Solve for x
   x = 54,360,660.03/7,141.64
6. Step 6: Final answer
   x = 7,611.79