Finding the Fourth Proportional to 7,089.12, 9,782.88 and 4,104.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,089.12 : 9,782.88 = 4,104.72 : x
2. Step 2: Convert to fraction form
   7,089.12/9,782.88 = 4,104.72/x
3. Step 3: Cross multiply
   7,089.12x = 9,782.88 × 4,104.72
4. Step 4: Simplify right side
   7,089.12x = 40,155,983.19
5. Step 5: Solve for x
   x = 40,155,983.19/7,089.12
6. Step 6: Final answer
   x = 5,664.45