Finding the Fourth Proportional to 20,945.06, 31,417.43 and 5,150.02

Step by Step Solution

1. Step 1: Write the proportion equation
   20,945.06 : 31,417.43 = 5,150.02 : x
2. Step 2: Convert to fraction form
   20,945.06/31,417.43 = 5,150.02/x
3. Step 3: Cross multiply
   20,945.06x = 31,417.43 × 5,150.02
4. Step 4: Simplify right side
   20,945.06x = 161,800,392.85
5. Step 5: Solve for x
   x = 161,800,392.85/20,945.06
6. Step 6: Final answer
   x = 7,724.99