Finding the Fourth Proportional to 21,290.42, 31,933.20 and 5,706.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,290.42 : 31,933.20 = 5,706.83 : x
2. Step 2: Convert to fraction form
   21,290.42/31,933.20 = 5,706.83/x
3. Step 3: Cross multiply
   21,290.42x = 31,933.20 × 5,706.83
4. Step 4: Simplify right side
   21,290.42x = 182,237,343.76
5. Step 5: Solve for x
   x = 182,237,343.76/21,290.42
6. Step 6: Final answer
   x = 8,559.59