Finding the Fourth Proportional to 5,300.78, 7,314.30 and 3,175.83

Step by Step Solution

1. Step 1: Write the proportion equation
   5,300.78 : 7,314.30 = 3,175.83 : x
2. Step 2: Convert to fraction form
   5,300.78/7,314.30 = 3,175.83/x
3. Step 3: Cross multiply
   5,300.78x = 7,314.30 × 3,175.83
4. Step 4: Simplify right side
   5,300.78x = 23,228,973.37
5. Step 5: Solve for x
   x = 23,228,973.37/5,300.78
6. Step 6: Final answer
   x = 4,382.18