Finding the Fourth Proportional to 9,139.96, 13,709.89 and 2,214.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139.96 : 13,709.89 = 2,214.46 : x
2. Step 2: Convert to fraction form
   9,139.96/13,709.89 = 2,214.46/x
3. Step 3: Cross multiply
   9,139.96x = 13,709.89 × 2,214.46
4. Step 4: Simplify right side
   9,139.96x = 30,360,003.01
5. Step 5: Solve for x
   x = 30,360,003.01/9,139.96
6. Step 6: Final answer
   x = 3,321.68