Finding the Fourth Proportional to 3,624.65, 5,000.18 and 2,131.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,624.65 : 5,000.18 = 2,131.61 : x
2. Step 2: Convert to fraction form
   3,624.65/5,000.18 = 2,131.61/x
3. Step 3: Cross multiply
   3,624.65x = 5,000.18 × 2,131.61
4. Step 4: Simplify right side
   3,624.65x = 10,658,433.69
5. Step 5: Solve for x
   x = 10,658,433.69/3,624.65
6. Step 6: Final answer
   x = 2,940.55