Finding the Fourth Proportional to 9,218.81, 13,828.52 and 2,293.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,218.81 : 13,828.52 = 2,293.31 : x
2. Step 2: Convert to fraction form
   9,218.81/13,828.52 = 2,293.31/x
3. Step 3: Cross multiply
   9,218.81x = 13,828.52 × 2,293.31
4. Step 4: Simplify right side
   9,218.81x = 31,713,123.51
5. Step 5: Solve for x
   x = 31,713,123.51/9,218.81
6. Step 6: Final answer
   x = 3,440.04