Finding the Fourth Proportional to 21,127.59, 31,688.91 and 5,546.43

Step by Step Solution

1. Step 1: Write the proportion equation
   21,127.59 : 31,688.91 = 5,546.43 : x
2. Step 2: Convert to fraction form
   21,127.59/31,688.91 = 5,546.43/x
3. Step 3: Cross multiply
   21,127.59x = 31,688.91 × 5,546.43
4. Step 4: Simplify right side
   21,127.59x = 175,760,321.09
5. Step 5: Solve for x
   x = 175,760,321.09/21,127.59
6. Step 6: Final answer
   x = 8,319.00