Finding the Fourth Proportional to 13,020.46, 17,965.12 and 7,714.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,020.46 : 17,965.12 = 7,714.35 : x
2. Step 2: Convert to fraction form
   13,020.46/17,965.12 = 7,714.35/x
3. Step 3: Cross multiply
   13,020.46x = 17,965.12 × 7,714.35
4. Step 4: Simplify right side
   13,020.46x = 138,589,223.47
5. Step 5: Solve for x
   x = 138,589,223.47/13,020.46
6. Step 6: Final answer
   x = 10,643.96