Finding the Fourth Proportional to 3,557.28, 5,310.25 and 3,397.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,557.28 : 5,310.25 = 3,397.52 : x
2. Step 2: Convert to fraction form
   3,557.28/5,310.25 = 3,397.52/x
3. Step 3: Cross multiply
   3,557.28x = 5,310.25 × 3,397.52
4. Step 4: Simplify right side
   3,557.28x = 18,041,663.59
5. Step 5: Solve for x
   x = 18,041,663.59/3,557.28
6. Step 6: Final answer
   x = 5,071.76