Finding the Fourth Proportional to 13,022.81, 17,970.41 and 7,358.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,022.81 : 17,970.41 = 7,358.05 : x
2. Step 2: Convert to fraction form
   13,022.81/17,970.41 = 7,358.05/x
3. Step 3: Cross multiply
   13,022.81x = 17,970.41 × 7,358.05
4. Step 4: Simplify right side
   13,022.81x = 132,227,175.30
5. Step 5: Solve for x
   x = 132,227,175.30/13,022.81
6. Step 6: Final answer
   x = 10,153.51