Finding the Fourth Proportional to 11,164.28, 16,746.78 and 5,317.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,164.28 : 16,746.78 = 5,317.88 : x
2. Step 2: Convert to fraction form
   11,164.28/16,746.78 = 5,317.88/x
3. Step 3: Cross multiply
   11,164.28x = 16,746.78 × 5,317.88
4. Step 4: Simplify right side
   11,164.28x = 89,057,366.43
5. Step 5: Solve for x
   x = 89,057,366.43/11,164.28
6. Step 6: Final answer
   x = 7,976.99