Finding the Fourth Proportional to 7,388.72, 11,080.25 and 3,171.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,388.72 : 11,080.25 = 3,171.59 : x
2. Step 2: Convert to fraction form
   7,388.72/11,080.25 = 3,171.59/x
3. Step 3: Cross multiply
   7,388.72x = 11,080.25 × 3,171.59
4. Step 4: Simplify right side
   7,388.72x = 35,142,010.10
5. Step 5: Solve for x
   x = 35,142,010.10/7,388.72
6. Step 6: Final answer
   x = 4,756.17