Finding the Fourth Proportional to 13,362.57, 18,440.12 and 7,394.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,362.57 : 18,440.12 = 7,394.09 : x
2. Step 2: Convert to fraction form
   13,362.57/18,440.12 = 7,394.09/x
3. Step 3: Cross multiply
   13,362.57x = 18,440.12 × 7,394.09
4. Step 4: Simplify right side
   13,362.57x = 136,347,833.18
5. Step 5: Solve for x
   x = 136,347,833.18/13,362.57
6. Step 6: Final answer
   x = 10,203.71