Finding the Fourth Proportional to 5,145.60, 7,100.94 and 2,787.73

Step by Step Solution

1. Step 1: Write the proportion equation
   5,145.60 : 7,100.94 = 2,787.73 : x
2. Step 2: Convert to fraction form
   5,145.60/7,100.94 = 2,787.73/x
3. Step 3: Cross multiply
   5,145.60x = 7,100.94 × 2,787.73
4. Step 4: Simplify right side
   5,145.60x = 19,795,503.47
5. Step 5: Solve for x
   x = 19,795,503.47/5,145.60
6. Step 6: Final answer
   x = 3,847.08