Finding the Fourth Proportional to 8,405.82, 12,589.29 and 8,114.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,405.82 : 12,589.29 = 8,114.22 : x
2. Step 2: Convert to fraction form
   8,405.82/12,589.29 = 8,114.22/x
3. Step 3: Cross multiply
   8,405.82x = 12,589.29 × 8,114.22
4. Step 4: Simplify right side
   8,405.82x = 102,152,268.70
5. Step 5: Solve for x
   x = 102,152,268.70/8,405.82
6. Step 6: Final answer
   x = 12,152.56