Finding the Fourth Proportional to 7,121.04, 9,828.72 and 4,326

Step by Step Solution

1. Step 1: Write the proportion equation
   7,121.04 : 9,828.72 = 4,326 : x
2. Step 2: Convert to fraction form
   7,121.04/9,828.72 = 4,326/x
3. Step 3: Cross multiply
   7,121.04x = 9,828.72 × 4,326
4. Step 4: Simplify right side
   7,121.04x = 42,519,042.72
5. Step 5: Solve for x
   x = 42,519,042.72/7,121.04
6. Step 6: Final answer
   x = 5,970.90