Finding the Fourth Proportional to 20,760.22, 31,141.41 and 5,177.98

Step by Step Solution

1. Step 1: Write the proportion equation
   20,760.22 : 31,141.41 = 5,177.98 : x
2. Step 2: Convert to fraction form
   20,760.22/31,141.41 = 5,177.98/x
3. Step 3: Cross multiply
   20,760.22x = 31,141.41 × 5,177.98
4. Step 4: Simplify right side
   20,760.22x = 161,249,598.15
5. Step 5: Solve for x
   x = 161,249,598.15/20,760.22
6. Step 6: Final answer
   x = 7,767.24