Finding the Fourth Proportional to 13,003.99, 17,945.43 and 7,340.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,003.99 : 17,945.43 = 7,340.57 : x
2. Step 2: Convert to fraction form
   13,003.99/17,945.43 = 7,340.57/x
3. Step 3: Cross multiply
   13,003.99x = 17,945.43 × 7,340.57
4. Step 4: Simplify right side
   13,003.99x = 131,729,777.37
5. Step 5: Solve for x
   x = 131,729,777.37/13,003.99
6. Step 6: Final answer
   x = 10,129.95