Finding the Fourth Proportional to 20,535.18, 30,805.18 and 7,204.10

Step by Step Solution

1. Step 1: Write the proportion equation
   20,535.18 : 30,805.18 = 7,204.10 : x
2. Step 2: Convert to fraction form
   20,535.18/30,805.18 = 7,204.10/x
3. Step 3: Cross multiply
   20,535.18x = 30,805.18 × 7,204.10
4. Step 4: Simplify right side
   20,535.18x = 221,923,597.24
5. Step 5: Solve for x
   x = 221,923,597.24/20,535.18
6. Step 6: Final answer
   x = 10,807.00