Finding the Fourth Proportional to 7,089.84, 9,784.54 and 4,105.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,089.84 : 9,784.54 = 4,105.72 : x
2. Step 2: Convert to fraction form
   7,089.84/9,784.54 = 4,105.72/x
3. Step 3: Cross multiply
   7,089.84x = 9,784.54 × 4,105.72
4. Step 4: Simplify right side
   7,089.84x = 40,172,561.04
5. Step 5: Solve for x
   x = 40,172,561.04/7,089.84
6. Step 6: Final answer
   x = 5,666.22