Finding the Fourth Proportional to 3,453.20, 5,174.68 and 2,536.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,453.20 : 5,174.68 = 2,536.72 : x
2. Step 2: Convert to fraction form
   3,453.20/5,174.68 = 2,536.72/x
3. Step 3: Cross multiply
   3,453.20x = 5,174.68 × 2,536.72
4. Step 4: Simplify right side
   3,453.20x = 13,126,714.25
5. Step 5: Solve for x
   x = 13,126,714.25/3,453.20
6. Step 6: Final answer
   x = 3,801.32