Finding the Fourth Proportional to 21,314.16, 31,967.37 and 5,728.14

Step by Step Solution

1. Step 1: Write the proportion equation
   21,314.16 : 31,967.37 = 5,728.14 : x
2. Step 2: Convert to fraction form
   21,314.16/31,967.37 = 5,728.14/x
3. Step 3: Cross multiply
   21,314.16x = 31,967.37 × 5,728.14
4. Step 4: Simplify right side
   21,314.16x = 183,113,570.79
5. Step 5: Solve for x
   x = 183,113,570.79/21,314.16
6. Step 6: Final answer
   x = 8,591.17