Finding the Fourth Proportional to 10,980.02, 16,472.10 and 4,406.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,980.02 : 16,472.10 = 4,406.71 : x
2. Step 2: Convert to fraction form
   10,980.02/16,472.10 = 4,406.71/x
3. Step 3: Cross multiply
   10,980.02x = 16,472.10 × 4,406.71
4. Step 4: Simplify right side
   10,980.02x = 72,587,767.79
5. Step 5: Solve for x
   x = 72,587,767.79/10,980.02
6. Step 6: Final answer
   x = 6,610.90