Finding the Fourth Proportional to 11,389.79, 17,087.00 and 4,815.97

Step by Step Solution

1. Step 1: Write the proportion equation
   11,389.79 : 17,087.00 = 4,815.97 : x
2. Step 2: Convert to fraction form
   11,389.79/17,087.00 = 4,815.97/x
3. Step 3: Cross multiply
   11,389.79x = 17,087.00 × 4,815.97
4. Step 4: Simplify right side
   11,389.79x = 82,290,412.59
5. Step 5: Solve for x
   x = 82,290,412.59/11,389.79
6. Step 6: Final answer
   x = 7,224.93