Finding the Fourth Proportional to 7,196.81, 10,788.28 and 3,688.47

Step by Step Solution

1. Step 1: Write the proportion equation
   7,196.81 : 10,788.28 = 3,688.47 : x
2. Step 2: Convert to fraction form
   7,196.81/10,788.28 = 3,688.47/x
3. Step 3: Cross multiply
   7,196.81x = 10,788.28 × 3,688.47
4. Step 4: Simplify right side
   7,196.81x = 39,792,247.13
5. Step 5: Solve for x
   x = 39,792,247.13/7,196.81
6. Step 6: Final answer
   x = 5,529.15