Finding the Fourth Proportional to 5,166.42, 7,128.78 and 2,927.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,166.42 : 7,128.78 = 2,927.82 : x
2. Step 2: Convert to fraction form
   5,166.42/7,128.78 = 2,927.82/x
3. Step 3: Cross multiply
   5,166.42x = 7,128.78 × 2,927.82
4. Step 4: Simplify right side
   5,166.42x = 20,871,784.66
5. Step 5: Solve for x
   x = 20,871,784.66/5,166.42
6. Step 6: Final answer
   x = 4,039.89