Finding the Fourth Proportional to 13,022.21, 17,969.59 and 7,357.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,022.21 : 17,969.59 = 7,357.45 : x
2. Step 2: Convert to fraction form
   13,022.21/17,969.59 = 7,357.45/x
3. Step 3: Cross multiply
   13,022.21x = 17,969.59 × 7,357.45
4. Step 4: Simplify right side
   13,022.21x = 132,210,404.60
5. Step 5: Solve for x
   x = 132,210,404.60/13,022.21
6. Step 6: Final answer
   x = 10,152.68