Finding the Fourth Proportional to 6,440.31, 8,888.74 and 3,787.83

Step by Step Solution

1. Step 1: Write the proportion equation
   6,440.31 : 8,888.74 = 3,787.83 : x
2. Step 2: Convert to fraction form
   6,440.31/8,888.74 = 3,787.83/x
3. Step 3: Cross multiply
   6,440.31x = 8,888.74 × 3,787.83
4. Step 4: Simplify right side
   6,440.31x = 33,669,026.56
5. Step 5: Solve for x
   x = 33,669,026.56/6,440.31
6. Step 6: Final answer
   x = 5,227.86