Finding the Fourth Proportional to 21,399.81, 32,102.12 and 5,817.57

Step by Step Solution

1. Step 1: Write the proportion equation
   21,399.81 : 32,102.12 = 5,817.57 : x
2. Step 2: Convert to fraction form
   21,399.81/32,102.12 = 5,817.57/x
3. Step 3: Cross multiply
   21,399.81x = 32,102.12 × 5,817.57
4. Step 4: Simplify right side
   21,399.81x = 186,756,301.16
5. Step 5: Solve for x
   x = 186,756,301.16/21,399.81
6. Step 6: Final answer
   x = 8,727.01