Finding the Fourth Proportional to 3,528.63, 4,868.53 and 2,780.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,528.63 : 4,868.53 = 2,780.27 : x
2. Step 2: Convert to fraction form
   3,528.63/4,868.53 = 2,780.27/x
3. Step 3: Cross multiply
   3,528.63x = 4,868.53 × 2,780.27
4. Step 4: Simplify right side
   3,528.63x = 13,535,827.90
5. Step 5: Solve for x
   x = 13,535,827.90/3,528.63
6. Step 6: Final answer
   x = 3,836.00