Finding the Fourth Proportional to 10,980.56, 16,471.76 and 3,189.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,980.56 : 16,471.76 = 3,189.38 : x
2. Step 2: Convert to fraction form
   10,980.56/16,471.76 = 3,189.38/x
3. Step 3: Cross multiply
   10,980.56x = 16,471.76 × 3,189.38
4. Step 4: Simplify right side
   10,980.56x = 52,534,603.60
5. Step 5: Solve for x
   x = 52,534,603.60/10,980.56
6. Step 6: Final answer
   x = 4,784.33