Finding the Fourth Proportional to 19,200.48, 28,804.59 and 7,513.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,200.48 : 28,804.59 = 7,513.50 : x
2. Step 2: Convert to fraction form
   19,200.48/28,804.59 = 7,513.50/x
3. Step 3: Cross multiply
   19,200.48x = 28,804.59 × 7,513.50
4. Step 4: Simplify right side
   19,200.48x = 216,423,286.97
5. Step 5: Solve for x
   x = 216,423,286.97/19,200.48
6. Step 6: Final answer
   x = 11,271.76