Finding the Fourth Proportional to 4,991.42, 7,487.86 and 2,650.83

Step by Step Solution

1. Step 1: Write the proportion equation
   4,991.42 : 7,487.86 = 2,650.83 : x
2. Step 2: Convert to fraction form
   4,991.42/7,487.86 = 2,650.83/x
3. Step 3: Cross multiply
   4,991.42x = 7,487.86 × 2,650.83
4. Step 4: Simplify right side
   4,991.42x = 19,849,043.92
5. Step 5: Solve for x
   x = 19,849,043.92/4,991.42
6. Step 6: Final answer
   x = 3,976.63