Finding the Fourth Proportional to 21,222.95, 31,834.31 and 5,427.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,222.95 : 31,834.31 = 5,427.96 : x
2. Step 2: Convert to fraction form
   21,222.95/31,834.31 = 5,427.96/x
3. Step 3: Cross multiply
   21,222.95x = 31,834.31 × 5,427.96
4. Step 4: Simplify right side
   21,222.95x = 172,795,325.37
5. Step 5: Solve for x
   x = 172,795,325.37/21,222.95
6. Step 6: Final answer
   x = 8,141.91