Finding the Fourth Proportional to 9,748.79, 14,620.60 and 2,728.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,748.79 : 14,620.60 = 2,728.37 : x
2. Step 2: Convert to fraction form
   9,748.79/14,620.60 = 2,728.37/x
3. Step 3: Cross multiply
   9,748.79x = 14,620.60 × 2,728.37
4. Step 4: Simplify right side
   9,748.79x = 39,890,406.42
5. Step 5: Solve for x
   x = 39,890,406.42/9,748.79
6. Step 6: Final answer
   x = 4,091.83