Finding the Fourth Proportional to 21,387.78, 32,083.29 and 5,805

Step by Step Solution

1. Step 1: Write the proportion equation
   21,387.78 : 32,083.29 = 5,805 : x
2. Step 2: Convert to fraction form
   21,387.78/32,083.29 = 5,805/x
3. Step 3: Cross multiply
   21,387.78x = 32,083.29 × 5,805
4. Step 4: Simplify right side
   21,387.78x = 186,243,498.45
5. Step 5: Solve for x
   x = 186,243,498.45/21,387.78
6. Step 6: Final answer
   x = 8,707.94