Finding the Fourth Proportional to 8,264.61, 12,386.37 and 3,872.39

Step by Step Solution

1. Step 1: Write the proportion equation
   8,264.61 : 12,386.37 = 3,872.39 : x
2. Step 2: Convert to fraction form
   8,264.61/12,386.37 = 3,872.39/x
3. Step 3: Cross multiply
   8,264.61x = 12,386.37 × 3,872.39
4. Step 4: Simplify right side
   8,264.61x = 47,964,793.39
5. Step 5: Solve for x
   x = 47,964,793.39/8,264.61
6. Step 6: Final answer
   x = 5,803.64