Finding the Fourth Proportional to 8,290.34, 12,451.46 and 7,107.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,290.34 : 12,451.46 = 7,107.08 : x
2. Step 2: Convert to fraction form
   8,290.34/12,451.46 = 7,107.08/x
3. Step 3: Cross multiply
   8,290.34x = 12,451.46 × 7,107.08
4. Step 4: Simplify right side
   8,290.34x = 88,493,522.34
5. Step 5: Solve for x
   x = 88,493,522.34/8,290.34
6. Step 6: Final answer
   x = 10,674.29