Finding the Fourth Proportional to 13,028.28, 17,978.94 and 7,059.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,028.28 : 17,978.94 = 7,059.84 : x
2. Step 2: Convert to fraction form
   13,028.28/17,978.94 = 7,059.84/x
3. Step 3: Cross multiply
   13,028.28x = 17,978.94 × 7,059.84
4. Step 4: Simplify right side
   13,028.28x = 126,928,439.77
5. Step 5: Solve for x
   x = 126,928,439.77/13,028.28
6. Step 6: Final answer
   x = 9,742.53