Finding the Fourth Proportional to 7,231.67, 10,853.68 and 5,156.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,231.67 : 10,853.68 = 5,156.75 : x
2. Step 2: Convert to fraction form
   7,231.67/10,853.68 = 5,156.75/x
3. Step 3: Cross multiply
   7,231.67x = 10,853.68 × 5,156.75
4. Step 4: Simplify right side
   7,231.67x = 55,969,714.34
5. Step 5: Solve for x
   x = 55,969,714.34/7,231.67
6. Step 6: Final answer
   x = 7,739.53