Finding the Fourth Proportional to 20,796.75, 31,192.83 and 5,214.38

Step by Step Solution

1. Step 1: Write the proportion equation
   20,796.75 : 31,192.83 = 5,214.38 : x
2. Step 2: Convert to fraction form
   20,796.75/31,192.83 = 5,214.38/x
3. Step 3: Cross multiply
   20,796.75x = 31,192.83 × 5,214.38
4. Step 4: Simplify right side
   20,796.75x = 162,651,112.93
5. Step 5: Solve for x
   x = 162,651,112.93/20,796.75
6. Step 6: Final answer
   x = 7,820.99