Finding the Fourth Proportional to 7,216.34, 9,957.89 and 4,231.63

Step by Step Solution

1. Step 1: Write the proportion equation
   7,216.34 : 9,957.89 = 4,231.63 : x
2. Step 2: Convert to fraction form
   7,216.34/9,957.89 = 4,231.63/x
3. Step 3: Cross multiply
   7,216.34x = 9,957.89 × 4,231.63
4. Step 4: Simplify right side
   7,216.34x = 42,138,091.75
5. Step 5: Solve for x
   x = 42,138,091.75/7,216.34
6. Step 6: Final answer
   x = 5,839.26