Finding the Fourth Proportional to 7,112.34, 10,661.58 and 3,993.84

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112.34 : 10,661.58 = 3,993.84 : x
2. Step 2: Convert to fraction form
   7,112.34/10,661.58 = 3,993.84/x
3. Step 3: Cross multiply
   7,112.34x = 10,661.58 × 3,993.84
4. Step 4: Simplify right side
   7,112.34x = 42,580,644.67
5. Step 5: Solve for x
   x = 42,580,644.67/7,112.34
6. Step 6: Final answer
   x = 5,986.87