Finding the Fourth Proportional to 5,388.42, 7,431.28 and 3,772.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,388.42 : 7,431.28 = 3,772.50 : x
2. Step 2: Convert to fraction form
   5,388.42/7,431.28 = 3,772.50/x
3. Step 3: Cross multiply
   5,388.42x = 7,431.28 × 3,772.50
4. Step 4: Simplify right side
   5,388.42x = 28,034,447.78
5. Step 5: Solve for x
   x = 28,034,447.78/5,388.42
6. Step 6: Final answer
   x = 5,202.73