Finding the Fourth Proportional to 7,100.42, 9,786.20 and 5,208.03

Step by Step Solution

1. Step 1: Write the proportion equation
   7,100.42 : 9,786.20 = 5,208.03 : x
2. Step 2: Convert to fraction form
   7,100.42/9,786.20 = 5,208.03/x
3. Step 3: Cross multiply
   7,100.42x = 9,786.20 × 5,208.03
4. Step 4: Simplify right side
   7,100.42x = 50,966,797.15
5. Step 5: Solve for x
   x = 50,966,797.15/7,100.42
6. Step 6: Final answer
   x = 7,178.00