Finding the Fourth Proportional to 21,389.29, 32,083.83 and 5,806.90

Step by Step Solution

1. Step 1: Write the proportion equation
   21,389.29 : 32,083.83 = 5,806.90 : x
2. Step 2: Convert to fraction form
   21,389.29/32,083.83 = 5,806.90/x
3. Step 3: Cross multiply
   21,389.29x = 32,083.83 × 5,806.90
4. Step 4: Simplify right side
   21,389.29x = 186,307,592.43
5. Step 5: Solve for x
   x = 186,307,592.43/21,389.29
6. Step 6: Final answer
   x = 8,710.32