Finding the Fourth Proportional to 6,429.45, 8,871.43 and 3,775.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,429.45 : 8,871.43 = 3,775.89 : x
2. Step 2: Convert to fraction form
   6,429.45/8,871.43 = 3,775.89/x
3. Step 3: Cross multiply
   6,429.45x = 8,871.43 × 3,775.89
4. Step 4: Simplify right side
   6,429.45x = 33,497,543.82
5. Step 5: Solve for x
   x = 33,497,543.82/6,429.45
6. Step 6: Final answer
   x = 5,210.02