Finding the Fourth Proportional to 21,055.15, 31,573.71 and 7,011.37

Step by Step Solution

1. Step 1: Write the proportion equation
   21,055.15 : 31,573.71 = 7,011.37 : x
2. Step 2: Convert to fraction form
   21,055.15/31,573.71 = 7,011.37/x
3. Step 3: Cross multiply
   21,055.15x = 31,573.71 × 7,011.37
4. Step 4: Simplify right side
   21,055.15x = 221,374,770.16
5. Step 5: Solve for x
   x = 221,374,770.16/21,055.15
6. Step 6: Final answer
   x = 10,514.05