Finding the Fourth Proportional to 10,980.88, 16,471.30 and 3,189.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,980.88 : 16,471.30 = 3,189.69 : x
2. Step 2: Convert to fraction form
   10,980.88/16,471.30 = 3,189.69/x
3. Step 3: Cross multiply
   10,980.88x = 16,471.30 × 3,189.69
4. Step 4: Simplify right side
   10,980.88x = 52,538,340.90
5. Step 5: Solve for x
   x = 52,538,340.90/10,980.88
6. Step 6: Final answer
   x = 4,784.53