Finding the Fourth Proportional to 20,648.28, 30,966.33 and 5,858.49

Step by Step Solution

1. Step 1: Write the proportion equation
   20,648.28 : 30,966.33 = 5,858.49 : x
2. Step 2: Convert to fraction form
   20,648.28/30,966.33 = 5,858.49/x
3. Step 3: Cross multiply
   20,648.28x = 30,966.33 × 5,858.49
4. Step 4: Simplify right side
   20,648.28x = 181,415,779.81
5. Step 5: Solve for x
   x = 181,415,779.81/20,648.28
6. Step 6: Final answer
   x = 8,786.00