Finding the Fourth Proportional to 3,487.72, 4,816.83 and 2,164.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,487.72 : 4,816.83 = 2,164.58 : x
2. Step 2: Convert to fraction form
   3,487.72/4,816.83 = 2,164.58/x
3. Step 3: Cross multiply
   3,487.72x = 4,816.83 × 2,164.58
4. Step 4: Simplify right side
   3,487.72x = 10,426,413.88
5. Step 5: Solve for x
   x = 10,426,413.88/3,487.72
6. Step 6: Final answer
   x = 2,989.46