Finding the Fourth Proportional to 6,429.23, 8,869.83 and 4,038.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,429.23 : 8,869.83 = 4,038.20 : x
2. Step 2: Convert to fraction form
   6,429.23/8,869.83 = 4,038.20/x
3. Step 3: Cross multiply
   6,429.23x = 8,869.83 × 4,038.20
4. Step 4: Simplify right side
   6,429.23x = 35,818,147.51
5. Step 5: Solve for x
   x = 35,818,147.51/6,429.23
6. Step 6: Final answer
   x = 5,571.14