Finding the Fourth Proportional to 10,978.94, 16,468.44 and 2,658.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.94 : 16,468.44 = 2,658.94 : x
2. Step 2: Convert to fraction form
   10,978.94/16,468.44 = 2,658.94/x
3. Step 3: Cross multiply
   10,978.94x = 16,468.44 × 2,658.94
4. Step 4: Simplify right side
   10,978.94x = 43,788,562.65
5. Step 5: Solve for x
   x = 43,788,562.65/10,978.94
6. Step 6: Final answer
   x = 3,988.42