Finding the Fourth Proportional to 4,796.89, 6,618.31 and 2,780.17

Step by Step Solution

1. Step 1: Write the proportion equation
   4,796.89 : 6,618.31 = 2,780.17 : x
2. Step 2: Convert to fraction form
   4,796.89/6,618.31 = 2,780.17/x
3. Step 3: Cross multiply
   4,796.89x = 6,618.31 × 2,780.17
4. Step 4: Simplify right side
   4,796.89x = 18,400,026.91
5. Step 5: Solve for x
   x = 18,400,026.91/4,796.89
6. Step 6: Final answer
   x = 3,835.82