Finding the Fourth Proportional to 19,200.69, 28,792.59 and 9,707.17

Step by Step Solution

1. Step 1: Write the proportion equation
   19,200.69 : 28,792.59 = 9,707.17 : x
2. Step 2: Convert to fraction form
   19,200.69/28,792.59 = 9,707.17/x
3. Step 3: Cross multiply
   19,200.69x = 28,792.59 × 9,707.17
4. Step 4: Simplify right side
   19,200.69x = 279,494,457.49
5. Step 5: Solve for x
   x = 279,494,457.49/19,200.69
6. Step 6: Final answer
   x = 14,556.48