Finding the Fourth Proportional to 13,022.83, 17,968.39 and 7,716.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,022.83 : 17,968.39 = 7,716.72 : x
2. Step 2: Convert to fraction form
   13,022.83/17,968.39 = 7,716.72/x
3. Step 3: Cross multiply
   13,022.83x = 17,968.39 × 7,716.72
4. Step 4: Simplify right side
   13,022.83x = 138,657,034.48
5. Step 5: Solve for x
   x = 138,657,034.48/13,022.83
6. Step 6: Final answer
   x = 10,647.23