Finding the Fourth Proportional to 13,013.62, 17,958.81 and 7,045.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,013.62 : 17,958.81 = 7,045.29 : x
2. Step 2: Convert to fraction form
   13,013.62/17,958.81 = 7,045.29/x
3. Step 3: Cross multiply
   13,013.62x = 17,958.81 × 7,045.29
4. Step 4: Simplify right side
   13,013.62x = 126,525,011.29
5. Step 5: Solve for x
   x = 126,525,011.29/13,013.62
6. Step 6: Final answer
   x = 9,722.50