Finding the Fourth Proportional to 20,238.21, 30,362.79 and 7,099.83

Step by Step Solution

1. Step 1: Write the proportion equation
   20,238.21 : 30,362.79 = 7,099.83 : x
2. Step 2: Convert to fraction form
   20,238.21/30,362.79 = 7,099.83/x
3. Step 3: Cross multiply
   20,238.21x = 30,362.79 × 7,099.83
4. Step 4: Simplify right side
   20,238.21x = 215,570,647.33
5. Step 5: Solve for x
   x = 215,570,647.33/20,238.21
6. Step 6: Final answer
   x = 10,651.67