Finding the Fourth Proportional to 20,784.54, 31,181.42 and 5,992.30

Step by Step Solution

1. Step 1: Write the proportion equation
   20,784.54 : 31,181.42 = 5,992.30 : x
2. Step 2: Convert to fraction form
   20,784.54/31,181.42 = 5,992.30/x
3. Step 3: Cross multiply
   20,784.54x = 31,181.42 × 5,992.30
4. Step 4: Simplify right side
   20,784.54x = 186,848,564.72
5. Step 5: Solve for x
   x = 186,848,564.72/20,784.54
6. Step 6: Final answer
   x = 8,989.79