Finding the Fourth Proportional to 10,978.47, 16,468.38 and 4,403.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.47 : 16,468.38 = 4,403.80 : x
2. Step 2: Convert to fraction form
   10,978.47/16,468.38 = 4,403.80/x
3. Step 3: Cross multiply
   10,978.47x = 16,468.38 × 4,403.80
4. Step 4: Simplify right side
   10,978.47x = 72,523,472.43
5. Step 5: Solve for x
   x = 72,523,472.43/10,978.47
6. Step 6: Final answer
   x = 6,605.97