Finding the Fourth Proportional to 7,086.56, 10,631.18 and 2,156.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,086.56 : 10,631.18 = 2,156.69 : x
2. Step 2: Convert to fraction form
   7,086.56/10,631.18 = 2,156.69/x
3. Step 3: Cross multiply
   7,086.56x = 10,631.18 × 2,156.69
4. Step 4: Simplify right side
   7,086.56x = 22,928,191.56
5. Step 5: Solve for x
   x = 22,928,191.56/7,086.56
6. Step 6: Final answer
   x = 3,235.45