Finding the Fourth Proportional to 10,989.28, 16,476.59 and 3,591.14

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989.28 : 16,476.59 = 3,591.14 : x
2. Step 2: Convert to fraction form
   10,989.28/16,476.59 = 3,591.14/x
3. Step 3: Cross multiply
   10,989.28x = 16,476.59 × 3,591.14
4. Step 4: Simplify right side
   10,989.28x = 59,169,791.58
5. Step 5: Solve for x
   x = 59,169,791.58/10,989.28
6. Step 6: Final answer
   x = 5,384.32