Finding the Fourth Proportional to 10,978.71, 16,468.10 and 2,658.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.71 : 16,468.10 = 2,658.71 : x
2. Step 2: Convert to fraction form
   10,978.71/16,468.10 = 2,658.71/x
3. Step 3: Cross multiply
   10,978.71x = 16,468.10 × 2,658.71
4. Step 4: Simplify right side
   10,978.71x = 43,783,949.97
5. Step 5: Solve for x
   x = 43,783,949.97/10,978.71
6. Step 6: Final answer
   x = 3,988.08