Finding the Fourth Proportional to 10,978.37, 16,467.60 and 2,658.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.37 : 16,467.60 = 2,658.38 : x
2. Step 2: Convert to fraction form
   10,978.37/16,467.60 = 2,658.38/x
3. Step 3: Cross multiply
   10,978.37x = 16,467.60 × 2,658.38
4. Step 4: Simplify right side
   10,978.37x = 43,777,056.15
5. Step 5: Solve for x
   x = 43,777,056.15/10,978.37
6. Step 6: Final answer
   x = 3,987.57