Finding the Fourth Proportional to 6,428.34, 8,870.82 and 3,776.04

Step by Step Solution

1. Step 1: Write the proportion equation
   6,428.34 : 8,870.82 = 3,776.04 : x
2. Step 2: Convert to fraction form
   6,428.34/8,870.82 = 3,776.04/x
3. Step 3: Cross multiply
   6,428.34x = 8,870.82 × 3,776.04
4. Step 4: Simplify right side
   6,428.34x = 33,496,571.15
5. Step 5: Solve for x
   x = 33,496,571.15/6,428.34
6. Step 6: Final answer
   x = 5,210.77