Finding the Fourth Proportional to 20,867.08, 31,300.68 and 5,284.69

Step by Step Solution

1. Step 1: Write the proportion equation
   20,867.08 : 31,300.68 = 5,284.69 : x
2. Step 2: Convert to fraction form
   20,867.08/31,300.68 = 5,284.69/x
3. Step 3: Cross multiply
   20,867.08x = 31,300.68 × 5,284.69
4. Step 4: Simplify right side
   20,867.08x = 165,414,390.59
5. Step 5: Solve for x
   x = 165,414,390.59/20,867.08
6. Step 6: Final answer
   x = 7,927.05