Finding the Fourth Proportional to 6,658.33, 9,989.05 and 1,978.37

Step by Step Solution

1. Step 1: Write the proportion equation
   6,658.33 : 9,989.05 = 1,978.37 : x
2. Step 2: Convert to fraction form
   6,658.33/9,989.05 = 1,978.37/x
3. Step 3: Cross multiply
   6,658.33x = 9,989.05 × 1,978.37
4. Step 4: Simplify right side
   6,658.33x = 19,762,086.27
5. Step 5: Solve for x
   x = 19,762,086.27/6,658.33
6. Step 6: Final answer
   x = 2,968.03