Finding the Fourth Proportional to 5,131.29, 7,087.02 and 3,449.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131.29 : 7,087.02 = 3,449.78 : x
2. Step 2: Convert to fraction form
   5,131.29/7,087.02 = 3,449.78/x
3. Step 3: Cross multiply
   5,131.29x = 7,087.02 × 3,449.78
4. Step 4: Simplify right side
   5,131.29x = 24,448,642.61
5. Step 5: Solve for x
   x = 24,448,642.61/5,131.29
6. Step 6: Final answer
   x = 4,764.62