Finding the Fourth Proportional to 10,978.76, 16,471.56 and 3,583.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.76 : 16,471.56 = 3,583.28 : x
2. Step 2: Convert to fraction form
   10,978.76/16,471.56 = 3,583.28/x
3. Step 3: Cross multiply
   10,978.76x = 16,471.56 × 3,583.28
4. Step 4: Simplify right side
   10,978.76x = 59,022,211.52
5. Step 5: Solve for x
   x = 59,022,211.52/10,978.76
6. Step 6: Final answer
   x = 5,376.04