Finding the Fourth Proportional to 6,439.83, 8,886.89 and 3,787.49

Step by Step Solution

1. Step 1: Write the proportion equation
   6,439.83 : 8,886.89 = 3,787.49 : x
2. Step 2: Convert to fraction form
   6,439.83/8,886.89 = 3,787.49/x
3. Step 3: Cross multiply
   6,439.83x = 8,886.89 × 3,787.49
4. Step 4: Simplify right side
   6,439.83x = 33,658,943.63
5. Step 5: Solve for x
   x = 33,658,943.63/6,439.83
6. Step 6: Final answer
   x = 5,226.68