Finding the Fourth Proportional to 5,109.18, 7,050.56 and 2,870.76

Step by Step Solution

1. Step 1: Write the proportion equation
   5,109.18 : 7,050.56 = 2,870.76 : x
2. Step 2: Convert to fraction form
   5,109.18/7,050.56 = 2,870.76/x
3. Step 3: Cross multiply
   5,109.18x = 7,050.56 × 2,870.76
4. Step 4: Simplify right side
   5,109.18x = 20,240,465.63
5. Step 5: Solve for x
   x = 20,240,465.63/5,109.18
6. Step 6: Final answer
   x = 3,961.59