Finding the Fourth Proportional to 10,968.30, 16,443.18 and 4,390.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,968.30 : 16,443.18 = 4,390.88 : x
2. Step 2: Convert to fraction form
   10,968.30/16,443.18 = 4,390.88/x
3. Step 3: Cross multiply
   10,968.30x = 16,443.18 × 4,390.88
4. Step 4: Simplify right side
   10,968.30x = 72,199,947.98
5. Step 5: Solve for x
   x = 72,199,947.98/10,968.30
6. Step 6: Final answer
   x = 6,582.60