Finding the Fourth Proportional to 5,165.46, 7,128.31 and 2,927.76

Step by Step Solution

1. Step 1: Write the proportion equation
   5,165.46 : 7,128.31 = 2,927.76 : x
2. Step 2: Convert to fraction form
   5,165.46/7,128.31 = 2,927.76/x
3. Step 3: Cross multiply
   5,165.46x = 7,128.31 × 2,927.76
4. Step 4: Simplify right side
   5,165.46x = 20,869,980.89
5. Step 5: Solve for x
   x = 20,869,980.89/5,165.46
6. Step 6: Final answer
   x = 4,040.29