Finding the Fourth Proportional to 21,323.34, 31,982.58 and 5,742.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,323.34 : 31,982.58 = 5,742.18 : x
2. Step 2: Convert to fraction form
   21,323.34/31,982.58 = 5,742.18/x
3. Step 3: Cross multiply
   21,323.34x = 31,982.58 × 5,742.18
4. Step 4: Simplify right side
   21,323.34x = 183,649,731.22
5. Step 5: Solve for x
   x = 183,649,731.22/21,323.34
6. Step 6: Final answer
   x = 8,612.62