Finding the Fourth Proportional to 13,028.29, 17,978.97 and 7,059.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,028.29 : 17,978.97 = 7,059.81 : x
2. Step 2: Convert to fraction form
   13,028.29/17,978.97 = 7,059.81/x
3. Step 3: Cross multiply
   13,028.29x = 17,978.97 × 7,059.81
4. Step 4: Simplify right side
   13,028.29x = 126,928,022.30
5. Step 5: Solve for x
   x = 126,928,022.30/13,028.29
6. Step 6: Final answer
   x = 9,742.49