Finding the Fourth Proportional to 7,272.31, 10,911.71 and 3,808.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,272.31 : 10,911.71 = 3,808.75 : x
2. Step 2: Convert to fraction form
   7,272.31/10,911.71 = 3,808.75/x
3. Step 3: Cross multiply
   7,272.31x = 10,911.71 × 3,808.75
4. Step 4: Simplify right side
   7,272.31x = 41,559,975.46
5. Step 5: Solve for x
   x = 41,559,975.46/7,272.31
6. Step 6: Final answer
   x = 5,714.82