Finding the Fourth Proportional to 9,858.67, 14,787.72 and 2,838.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,858.67 : 14,787.72 = 2,838.71 : x
2. Step 2: Convert to fraction form
   9,858.67/14,787.72 = 2,838.71/x
3. Step 3: Cross multiply
   9,858.67x = 14,787.72 × 2,838.71
4. Step 4: Simplify right side
   9,858.67x = 41,978,085.61
5. Step 5: Solve for x
   x = 41,978,085.61/9,858.67
6. Step 6: Final answer
   x = 4,257.99