Finding the Fourth Proportional to 3,991.83, 5,506.28 and 2,647.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,991.83 : 5,506.28 = 2,647.50 : x
2. Step 2: Convert to fraction form
   3,991.83/5,506.28 = 2,647.50/x
3. Step 3: Cross multiply
   3,991.83x = 5,506.28 × 2,647.50
4. Step 4: Simplify right side
   3,991.83x = 14,577,883.31
5. Step 5: Solve for x
   x = 14,577,883.31/3,991.83
6. Step 6: Final answer
   x = 3,651.93