Finding the Fourth Proportional to 9,787.30, 14,680.88 and 2,391.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,787.30 : 14,680.88 = 2,391.78 : x
2. Step 2: Convert to fraction form
   9,787.30/14,680.88 = 2,391.78/x
3. Step 3: Cross multiply
   9,787.30x = 14,680.88 × 2,391.78
4. Step 4: Simplify right side
   9,787.30x = 35,113,435.17
5. Step 5: Solve for x
   x = 35,113,435.17/9,787.30
6. Step 6: Final answer
   x = 3,587.65