Finding the Fourth Proportional to 20,948.73, 31,433.33 and 9,856.51

Step by Step Solution

1. Step 1: Write the proportion equation
   20,948.73 : 31,433.33 = 9,856.51 : x
2. Step 2: Convert to fraction form
   20,948.73/31,433.33 = 9,856.51/x
3. Step 3: Cross multiply
   20,948.73x = 31,433.33 × 9,856.51
4. Step 4: Simplify right side
   20,948.73x = 309,822,882.20
5. Step 5: Solve for x
   x = 309,822,882.20/20,948.73
6. Step 6: Final answer
   x = 14,789.58