Finding the Fourth Proportional to 6,429.09, 8,870.76 and 3,774.96

Step by Step Solution

1. Step 1: Write the proportion equation
   6,429.09 : 8,870.76 = 3,774.96 : x
2. Step 2: Convert to fraction form
   6,429.09/8,870.76 = 3,774.96/x
3. Step 3: Cross multiply
   6,429.09x = 8,870.76 × 3,774.96
4. Step 4: Simplify right side
   6,429.09x = 33,486,764.17
5. Step 5: Solve for x
   x = 33,486,764.17/6,429.09
6. Step 6: Final answer
   x = 5,208.63