Finding the Fourth Proportional to 7,449.88, 10,272.43 and 5,429.73

Step by Step Solution

1. Step 1: Write the proportion equation
   7,449.88 : 10,272.43 = 5,429.73 : x
2. Step 2: Convert to fraction form
   7,449.88/10,272.43 = 5,429.73/x
3. Step 3: Cross multiply
   7,449.88x = 10,272.43 × 5,429.73
4. Step 4: Simplify right side
   7,449.88x = 55,776,494.20
5. Step 5: Solve for x
   x = 55,776,494.20/7,449.88
6. Step 6: Final answer
   x = 7,486.90