Finding the Fourth Proportional to 21,010.16, 31,514.16 and 5,427.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,010.16 : 31,514.16 = 5,427.38 : x
2. Step 2: Convert to fraction form
   21,010.16/31,514.16 = 5,427.38/x
3. Step 3: Cross multiply
   21,010.16x = 31,514.16 × 5,427.38
4. Step 4: Simplify right side
   21,010.16x = 171,039,321.70
5. Step 5: Solve for x
   x = 171,039,321.70/21,010.16
6. Step 6: Final answer
   x = 8,140.79