Finding the Fourth Proportional to 7,086.57, 10,630.46 and 2,156.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,086.57 : 10,630.46 = 2,156.25 : x
2. Step 2: Convert to fraction form
   7,086.57/10,630.46 = 2,156.25/x
3. Step 3: Cross multiply
   7,086.57x = 10,630.46 × 2,156.25
4. Step 4: Simplify right side
   7,086.57x = 22,921,918.59
5. Step 5: Solve for x
   x = 22,921,918.59/7,086.57
6. Step 6: Final answer
   x = 3,234.56