Finding the Fourth Proportional to 3,935.76, 5,426.30 and 3,225

Step by Step Solution

1. Step 1: Write the proportion equation
   3,935.76 : 5,426.30 = 3,225 : x
2. Step 2: Convert to fraction form
   3,935.76/5,426.30 = 3,225/x
3. Step 3: Cross multiply
   3,935.76x = 5,426.30 × 3,225
4. Step 4: Simplify right side
   3,935.76x = 17,499,817.50
5. Step 5: Solve for x
   x = 17,499,817.50/3,935.76
6. Step 6: Final answer
   x = 4,446.36