Finding the Fourth Proportional to 20,650.30, 30,976.63 and 5,858.05

Step by Step Solution

1. Step 1: Write the proportion equation
   20,650.30 : 30,976.63 = 5,858.05 : x
2. Step 2: Convert to fraction form
   20,650.30/30,976.63 = 5,858.05/x
3. Step 3: Cross multiply
   20,650.30x = 30,976.63 × 5,858.05
4. Step 4: Simplify right side
   20,650.30x = 181,462,647.37
5. Step 5: Solve for x
   x = 181,462,647.37/20,650.30
6. Step 6: Final answer
   x = 8,787.41