Finding the Fourth Proportional to 7,074.80, 9,753.47 and 5,644.02

Step by Step Solution

1. Step 1: Write the proportion equation
   7,074.80 : 9,753.47 = 5,644.02 : x
2. Step 2: Convert to fraction form
   7,074.80/9,753.47 = 5,644.02/x
3. Step 3: Cross multiply
   7,074.80x = 9,753.47 × 5,644.02
4. Step 4: Simplify right side
   7,074.80x = 55,048,727.15
5. Step 5: Solve for x
   x = 55,048,727.15/7,074.80
6. Step 6: Final answer
   x = 7,780.96