Finding the Fourth Proportional to 8,316.30, 12,474.21 and 3,384.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,316.30 : 12,474.21 = 3,384.72 : x
2. Step 2: Convert to fraction form
   8,316.30/12,474.21 = 3,384.72/x
3. Step 3: Cross multiply
   8,316.30x = 12,474.21 × 3,384.72
4. Step 4: Simplify right side
   8,316.30x = 42,221,708.07
5. Step 5: Solve for x
   x = 42,221,708.07/8,316.30
6. Step 6: Final answer
   x = 5,076.98