Finding the Fourth Proportional to 13,323.78, 18,386.71 and 7,355.46

Step by Step Solution

1. Step 1: Write the proportion equation
   13,323.78 : 18,386.71 = 7,355.46 : x
2. Step 2: Convert to fraction form
   13,323.78/18,386.71 = 7,355.46/x
3. Step 3: Cross multiply
   13,323.78x = 18,386.71 × 7,355.46
4. Step 4: Simplify right side
   13,323.78x = 135,242,709.94
5. Step 5: Solve for x
   x = 135,242,709.94/13,323.78
6. Step 6: Final answer
   x = 10,150.48