Finding the Fourth Proportional to 5,429.56, 7,488.76 and 3,515.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,429.56 : 7,488.76 = 3,515.86 : x
2. Step 2: Convert to fraction form
   5,429.56/7,488.76 = 3,515.86/x
3. Step 3: Cross multiply
   5,429.56x = 7,488.76 × 3,515.86
4. Step 4: Simplify right side
   5,429.56x = 26,329,431.73
5. Step 5: Solve for x
   x = 26,329,431.73/5,429.56
6. Step 6: Final answer
   x = 4,849.28