Finding the Fourth Proportional to 8,380.49, 12,566.79 and 4,871.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,380.49 : 12,566.79 = 4,871.61 : x
2. Step 2: Convert to fraction form
   8,380.49/12,566.79 = 4,871.61/x
3. Step 3: Cross multiply
   8,380.49x = 12,566.79 × 4,871.61
4. Step 4: Simplify right side
   8,380.49x = 61,220,499.83
5. Step 5: Solve for x
   x = 61,220,499.83/8,380.49
6. Step 6: Final answer
   x = 7,305.13