Finding the Fourth Proportional to 20,855.97, 31,283.69 and 5,061.13

Step by Step Solution

1. Step 1: Write the proportion equation
   20,855.97 : 31,283.69 = 5,061.13 : x
2. Step 2: Convert to fraction form
   20,855.97/31,283.69 = 5,061.13/x
3. Step 3: Cross multiply
   20,855.97x = 31,283.69 × 5,061.13
4. Step 4: Simplify right side
   20,855.97x = 158,330,922.89
5. Step 5: Solve for x
   x = 158,330,922.89/20,855.97
6. Step 6: Final answer
   x = 7,591.64