Finding the Fourth Proportional to 12,910.17, 19,361.38 and 4,589.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,910.17 : 19,361.38 = 4,589.09 : x
2. Step 2: Convert to fraction form
   12,910.17/19,361.38 = 4,589.09/x
3. Step 3: Cross multiply
   12,910.17x = 19,361.38 × 4,589.09
4. Step 4: Simplify right side
   12,910.17x = 88,851,152.27
5. Step 5: Solve for x
   x = 88,851,152.27/12,910.17
6. Step 6: Final answer
   x = 6,882.26