Finding the Fourth Proportional to 10,978.90, 16,467.99 and 4,403.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.90 : 16,467.99 = 4,403.32 : x
2. Step 2: Convert to fraction form
   10,978.90/16,467.99 = 4,403.32/x
3. Step 3: Cross multiply
   10,978.90x = 16,467.99 × 4,403.32
4. Step 4: Simplify right side
   10,978.90x = 72,513,829.73
5. Step 5: Solve for x
   x = 72,513,829.73/10,978.90
6. Step 6: Final answer
   x = 6,604.84