Finding the Fourth Proportional to 12,240, 18,359.52 and 3,474.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,240 : 18,359.52 = 3,474.72 : x
2. Step 2: Convert to fraction form
   12,240/18,359.52 = 3,474.72/x
3. Step 3: Cross multiply
   12,240x = 18,359.52 × 3,474.72
4. Step 4: Simplify right side
   12,240x = 63,794,191.33
5. Step 5: Solve for x
   x = 63,794,191.33/12,240
6. Step 6: Final answer
   x = 5,211.94