Finding the Fourth Proportional to 5,508.70, 7,603.72 and 3,718.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,508.70 : 7,603.72 = 3,718.78 : x
2. Step 2: Convert to fraction form
   5,508.70/7,603.72 = 3,718.78/x
3. Step 3: Cross multiply
   5,508.70x = 7,603.72 × 3,718.78
4. Step 4: Simplify right side
   5,508.70x = 28,276,561.86
5. Step 5: Solve for x
   x = 28,276,561.86/5,508.70
6. Step 6: Final answer
   x = 5,133.07