Finding the Fourth Proportional to 19,196.16, 28,794.48 and 5,345.28

Step by Step Solution

1. Step 1: Write the proportion equation
   19,196.16 : 28,794.48 = 5,345.28 : x
2. Step 2: Convert to fraction form
   19,196.16/28,794.48 = 5,345.28/x
3. Step 3: Cross multiply
   19,196.16x = 28,794.48 × 5,345.28
4. Step 4: Simplify right side
   19,196.16x = 153,914,558.05
5. Step 5: Solve for x
   x = 153,914,558.05/19,196.16
6. Step 6: Final answer
   x = 8,017.99