Finding the Fourth Proportional to 4,499.30, 6,209.50 and 2,821.98

Step by Step Solution

1. Step 1: Write the proportion equation
   4,499.30 : 6,209.50 = 2,821.98 : x
2. Step 2: Convert to fraction form
   4,499.30/6,209.50 = 2,821.98/x
3. Step 3: Cross multiply
   4,499.30x = 6,209.50 × 2,821.98
4. Step 4: Simplify right side
   4,499.30x = 17,523,084.81
5. Step 5: Solve for x
   x = 17,523,084.81/4,499.30
6. Step 6: Final answer
   x = 3,894.62