Finding the Fourth Proportional to 13,327.56, 18,391.86 and 7,359.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,327.56 : 18,391.86 = 7,359.12 : x
2. Step 2: Convert to fraction form
   13,327.56/18,391.86 = 7,359.12/x
3. Step 3: Cross multiply
   13,327.56x = 18,391.86 × 7,359.12
4. Step 4: Simplify right side
   13,327.56x = 135,347,904.76
5. Step 5: Solve for x
   x = 135,347,904.76/13,327.56
6. Step 6: Final answer
   x = 10,155.49