Finding the Fourth Proportional to 13,003.98, 17,945.42 and 7,338.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,003.98 : 17,945.42 = 7,338.80 : x
2. Step 2: Convert to fraction form
   13,003.98/17,945.42 = 7,338.80/x
3. Step 3: Cross multiply
   13,003.98x = 17,945.42 × 7,338.80
4. Step 4: Simplify right side
   13,003.98x = 131,697,721.87
5. Step 5: Solve for x
   x = 131,697,721.87/13,003.98
6. Step 6: Final answer
   x = 10,127.49