Finding the Fourth Proportional to 12,315.38, 18,475.83 and 3,549.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.38 : 18,475.83 = 3,549.62 : x
2. Step 2: Convert to fraction form
   12,315.38/18,475.83 = 3,549.62/x
3. Step 3: Cross multiply
   12,315.38x = 18,475.83 × 3,549.62
4. Step 4: Simplify right side
   12,315.38x = 65,582,221.87
5. Step 5: Solve for x
   x = 65,582,221.87/12,315.38
6. Step 6: Final answer
   x = 5,325.23