Finding the Fourth Proportional to 8,153.87, 12,218.83 and 4,818.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,153.87 : 12,218.83 = 4,818.69 : x
2. Step 2: Convert to fraction form
   8,153.87/12,218.83 = 4,818.69/x
3. Step 3: Cross multiply
   8,153.87x = 12,218.83 × 4,818.69
4. Step 4: Simplify right side
   8,153.87x = 58,878,741.89
5. Step 5: Solve for x
   x = 58,878,741.89/8,153.87
6. Step 6: Final answer
   x = 7,220.96