Finding the Fourth Proportional to 10,978.47, 16,469.28 and 3,581.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.47 : 16,469.28 = 3,581.10 : x
2. Step 2: Convert to fraction form
   10,978.47/16,469.28 = 3,581.10/x
3. Step 3: Cross multiply
   10,978.47x = 16,469.28 × 3,581.10
4. Step 4: Simplify right side
   10,978.47x = 58,978,138.61
5. Step 5: Solve for x
   x = 58,978,138.61/10,978.47
6. Step 6: Final answer
   x = 5,372.16