Finding the Fourth Proportional to 5,167.78, 7,128.32 and 4,303.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,167.78 : 7,128.32 = 4,303.22 : x
2. Step 2: Convert to fraction form
   5,167.78/7,128.32 = 4,303.22/x
3. Step 3: Cross multiply
   5,167.78x = 7,128.32 × 4,303.22
4. Step 4: Simplify right side
   5,167.78x = 30,674,672.03
5. Step 5: Solve for x
   x = 30,674,672.03/5,167.78
6. Step 6: Final answer
   x = 5,935.76