Finding the Fourth Proportional to 13,393.37, 18,481.43 and 7,423.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,393.37 : 18,481.43 = 7,423.47 : x
2. Step 2: Convert to fraction form
   13,393.37/18,481.43 = 7,423.47/x
3. Step 3: Cross multiply
   13,393.37x = 18,481.43 × 7,423.47
4. Step 4: Simplify right side
   13,393.37x = 137,196,359.72
5. Step 5: Solve for x
   x = 137,196,359.72/13,393.37
6. Step 6: Final answer
   x = 10,243.60