Finding the Fourth Proportional to 13,021.77, 17,969.89 and 7,356.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,021.77 : 17,969.89 = 7,356.54 : x
2. Step 2: Convert to fraction form
   13,021.77/17,969.89 = 7,356.54/x
3. Step 3: Cross multiply
   13,021.77x = 17,969.89 × 7,356.54
4. Step 4: Simplify right side
   13,021.77x = 132,196,177.80
5. Step 5: Solve for x
   x = 132,196,177.80/13,021.77
6. Step 6: Final answer
   x = 10,151.94