Finding the Fourth Proportional to 9,696.18, 14,550.66 and 5,316.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,696.18 : 14,550.66 = 5,316.72 : x
2. Step 2: Convert to fraction form
   9,696.18/14,550.66 = 5,316.72/x
3. Step 3: Cross multiply
   9,696.18x = 14,550.66 × 5,316.72
4. Step 4: Simplify right side
   9,696.18x = 77,361,785.04
5. Step 5: Solve for x
   x = 77,361,785.04/9,696.18
6. Step 6: Final answer
   x = 7,978.58