Finding the Fourth Proportional to 13,007.28, 17,949.96 and 7,342.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,007.28 : 17,949.96 = 7,342.05 : x
2. Step 2: Convert to fraction form
   13,007.28/17,949.96 = 7,342.05/x
3. Step 3: Cross multiply
   13,007.28x = 17,949.96 × 7,342.05
4. Step 4: Simplify right side
   13,007.28x = 131,789,503.82
5. Step 5: Solve for x
   x = 131,789,503.82/13,007.28
6. Step 6: Final answer
   x = 10,131.98