Finding the Fourth Proportional to 9,990.75, 13,786.49 and 5,741.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,990.75 : 13,786.49 = 5,741.82 : x
2. Step 2: Convert to fraction form
   9,990.75/13,786.49 = 5,741.82/x
3. Step 3: Cross multiply
   9,990.75x = 13,786.49 × 5,741.82
4. Step 4: Simplify right side
   9,990.75x = 79,159,558.37
5. Step 5: Solve for x
   x = 79,159,558.37/9,990.75
6. Step 6: Final answer
   x = 7,923.28