Finding the Fourth Proportional to 15,288.69, 21,092.00 and 9,613.38

Step by Step Solution

1. Step 1: Write the proportion equation
   15,288.69 : 21,092.00 = 9,613.38 : x
2. Step 2: Convert to fraction form
   15,288.69/21,092.00 = 9,613.38/x
3. Step 3: Cross multiply
   15,288.69x = 21,092.00 × 9,613.38
4. Step 4: Simplify right side
   15,288.69x = 202,765,362.89
5. Step 5: Solve for x
   x = 202,765,362.89/15,288.69
6. Step 6: Final answer
   x = 13,262.44