Finding the Fourth Proportional to 10,978.67, 16,468.01 and 2,658.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.67 : 16,468.01 = 2,658.69 : x
2. Step 2: Convert to fraction form
   10,978.67/16,468.01 = 2,658.69/x
3. Step 3: Cross multiply
   10,978.67x = 16,468.01 × 2,658.69
4. Step 4: Simplify right side
   10,978.67x = 43,783,420.93
5. Step 5: Solve for x
   x = 43,783,420.93/10,978.67
6. Step 6: Final answer
   x = 3,988.04