Finding the Fourth Proportional to 10,980.69, 16,470.90 and 4,406.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,980.69 : 16,470.90 = 4,406.76 : x
2. Step 2: Convert to fraction form
   10,980.69/16,470.90 = 4,406.76/x
3. Step 3: Cross multiply
   10,980.69x = 16,470.90 × 4,406.76
4. Step 4: Simplify right side
   10,980.69x = 72,583,303.28
5. Step 5: Solve for x
   x = 72,583,303.28/10,980.69
6. Step 6: Final answer
   x = 6,610.09