Finding the Fourth Proportional to 20,900.54, 31,330.64 and 7,041.98

Step by Step Solution

1. Step 1: Write the proportion equation
   20,900.54 : 31,330.64 = 7,041.98 : x
2. Step 2: Convert to fraction form
   20,900.54/31,330.64 = 7,041.98/x
3. Step 3: Cross multiply
   20,900.54x = 31,330.64 × 7,041.98
4. Step 4: Simplify right side
   20,900.54x = 220,629,740.27
5. Step 5: Solve for x
   x = 220,629,740.27/20,900.54
6. Step 6: Final answer
   x = 10,556.17