Finding the Fourth Proportional to 20,756.70, 31,139.82 and 5,965.74

Step by Step Solution

1. Step 1: Write the proportion equation
   20,756.70 : 31,139.82 = 5,965.74 : x
2. Step 2: Convert to fraction form
   20,756.70/31,139.82 = 5,965.74/x
3. Step 3: Cross multiply
   20,756.70x = 31,139.82 × 5,965.74
4. Step 4: Simplify right side
   20,756.70x = 185,772,069.77
5. Step 5: Solve for x
   x = 185,772,069.77/20,756.70
6. Step 6: Final answer
   x = 8,949.98