Finding the Fourth Proportional to 13,499.37, 18,628.25 and 8,463.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,499.37 : 18,628.25 = 8,463.38 : x
2. Step 2: Convert to fraction form
   13,499.37/18,628.25 = 8,463.38/x
3. Step 3: Cross multiply
   13,499.37x = 18,628.25 × 8,463.38
4. Step 4: Simplify right side
   13,499.37x = 157,657,823.03
5. Step 5: Solve for x
   x = 157,657,823.03/13,499.37
6. Step 6: Final answer
   x = 11,678.90