Finding the Fourth Proportional to 13,028.22, 17,978.46 and 7,059.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,028.22 : 17,978.46 = 7,059.76 : x
2. Step 2: Convert to fraction form
   13,028.22/17,978.46 = 7,059.76/x
3. Step 3: Cross multiply
   13,028.22x = 17,978.46 × 7,059.76
4. Step 4: Simplify right side
   13,028.22x = 126,923,612.77
5. Step 5: Solve for x
   x = 126,923,612.77/13,028.22
6. Step 6: Final answer
   x = 9,742.21