Finding the Fourth Proportional to 13,002.65, 17,937.31 and 7,965.26

Step by Step Solution

1. Step 1: Write the proportion equation
   13,002.65 : 17,937.31 = 7,965.26 : x
2. Step 2: Convert to fraction form
   13,002.65/17,937.31 = 7,965.26/x
3. Step 3: Cross multiply
   13,002.65x = 17,937.31 × 7,965.26
4. Step 4: Simplify right side
   13,002.65x = 142,875,337.85
5. Step 5: Solve for x
   x = 142,875,337.85/13,002.65
6. Step 6: Final answer
   x = 10,988.17