Finding the Fourth Proportional to 10,889.84, 16,326.56 and 5,619.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,889.84 : 16,326.56 = 5,619.17 : x
2. Step 2: Convert to fraction form
   10,889.84/16,326.56 = 5,619.17/x
3. Step 3: Cross multiply
   10,889.84x = 16,326.56 × 5,619.17
4. Step 4: Simplify right side
   10,889.84x = 91,741,771.02
5. Step 5: Solve for x
   x = 91,741,771.02/10,889.84
6. Step 6: Final answer
   x = 8,424.53