Finding the Fourth Proportional to 20,906.84, 31,357.56 and 5,323.52

Step by Step Solution

1. Step 1: Write the proportion equation
   20,906.84 : 31,357.56 = 5,323.52 : x
2. Step 2: Convert to fraction form
   20,906.84/31,357.56 = 5,323.52/x
3. Step 3: Cross multiply
   20,906.84x = 31,357.56 × 5,323.52
4. Step 4: Simplify right side
   20,906.84x = 166,932,597.81
5. Step 5: Solve for x
   x = 166,932,597.81/20,906.84
6. Step 6: Final answer
   x = 7,984.59