Finding the Fourth Proportional to 13,380.43, 18,467.28 and 7,714.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,380.43 : 18,467.28 = 7,714.18 : x
2. Step 2: Convert to fraction form
   13,380.43/18,467.28 = 7,714.18/x
3. Step 3: Cross multiply
   13,380.43x = 18,467.28 × 7,714.18
4. Step 4: Simplify right side
   13,380.43x = 142,459,922.03
5. Step 5: Solve for x
   x = 142,459,922.03/13,380.43
6. Step 6: Final answer
   x = 10,646.89