Finding the Fourth Proportional to 10,979.40, 16,480.98 and 4,410.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,979.40 : 16,480.98 = 4,410.12 : x
2. Step 2: Convert to fraction form
   10,979.40/16,480.98 = 4,410.12/x
3. Step 3: Cross multiply
   10,979.40x = 16,480.98 × 4,410.12
4. Step 4: Simplify right side
   10,979.40x = 72,683,099.52
5. Step 5: Solve for x
   x = 72,683,099.52/10,979.40
6. Step 6: Final answer
   x = 6,619.95