Finding the Fourth Proportional to 6,923.86, 10,386.27 and 1,993.55

Step by Step Solution

1. Step 1: Write the proportion equation
   6,923.86 : 10,386.27 = 1,993.55 : x
2. Step 2: Convert to fraction form
   6,923.86/10,386.27 = 1,993.55/x
3. Step 3: Cross multiply
   6,923.86x = 10,386.27 × 1,993.55
4. Step 4: Simplify right side
   6,923.86x = 20,705,496.63
5. Step 5: Solve for x
   x = 20,705,496.63/6,923.86
6. Step 6: Final answer
   x = 2,990.46