Finding the Fourth Proportional to 9,140.50, 13,710.83 and 2,215

Step by Step Solution

1. Step 1: Write the proportion equation
   9,140.50 : 13,710.83 = 2,215 : x
2. Step 2: Convert to fraction form
   9,140.50/13,710.83 = 2,215/x
3. Step 3: Cross multiply
   9,140.50x = 13,710.83 × 2,215
4. Step 4: Simplify right side
   9,140.50x = 30,369,488.45
5. Step 5: Solve for x
   x = 30,369,488.45/9,140.50
6. Step 6: Final answer
   x = 3,322.52