Finding the Fourth Proportional to 10,981.30, 16,467.15 and 4,405.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,981.30 : 16,467.15 = 4,405.30 : x
2. Step 2: Convert to fraction form
   10,981.30/16,467.15 = 4,405.30/x
3. Step 3: Cross multiply
   10,981.30x = 16,467.15 × 4,405.30
4. Step 4: Simplify right side
   10,981.30x = 72,542,735.90
5. Step 5: Solve for x
   x = 72,542,735.90/10,981.30
6. Step 6: Final answer
   x = 6,606.02