Finding the Fourth Proportional to 19,185.30, 28,768.86 and 7,169.31

Step by Step Solution

1. Step 1: Write the proportion equation
   19,185.30 : 28,768.86 = 7,169.31 : x
2. Step 2: Convert to fraction form
   19,185.30/28,768.86 = 7,169.31/x
3. Step 3: Cross multiply
   19,185.30x = 28,768.86 × 7,169.31
4. Step 4: Simplify right side
   19,185.30x = 206,252,875.69
5. Step 5: Solve for x
   x = 206,252,875.69/19,185.30
6. Step 6: Final answer
   x = 10,750.57