Finding the Fourth Proportional to 5,166.32, 7,128.72 and 2,927.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,166.32 : 7,128.72 = 2,927.72 : x
2. Step 2: Convert to fraction form
   5,166.32/7,128.72 = 2,927.72/x
3. Step 3: Cross multiply
   5,166.32x = 7,128.72 × 2,927.72
4. Step 4: Simplify right side
   5,166.32x = 20,870,896.12
5. Step 5: Solve for x
   x = 20,870,896.12/5,166.32
6. Step 6: Final answer
   x = 4,039.80