Finding the Fourth Proportional to 5,156.58, 7,116.06 and 2,918.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,156.58 : 7,116.06 = 2,918.61 : x
2. Step 2: Convert to fraction form
   5,156.58/7,116.06 = 2,918.61/x
3. Step 3: Cross multiply
   5,156.58x = 7,116.06 × 2,918.61
4. Step 4: Simplify right side
   5,156.58x = 20,769,003.88
5. Step 5: Solve for x
   x = 20,769,003.88/5,156.58
6. Step 6: Final answer
   x = 4,027.67