Finding the Fourth Proportional to 5,145.60, 7,100.82 and 3,050.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,145.60 : 7,100.82 = 3,050.40 : x
2. Step 2: Convert to fraction form
   5,145.60/7,100.82 = 3,050.40/x
3. Step 3: Cross multiply
   5,145.60x = 7,100.82 × 3,050.40
4. Step 4: Simplify right side
   5,145.60x = 21,660,341.33
5. Step 5: Solve for x
   x = 21,660,341.33/5,145.60
6. Step 6: Final answer
   x = 4,209.49