Finding the Fourth Proportional to 21,279.30, 31,916.49 and 5,698.14

Step by Step Solution

1. Step 1: Write the proportion equation
   21,279.30 : 31,916.49 = 5,698.14 : x
2. Step 2: Convert to fraction form
   21,279.30/31,916.49 = 5,698.14/x
3. Step 3: Cross multiply
   21,279.30x = 31,916.49 × 5,698.14
4. Step 4: Simplify right side
   21,279.30x = 181,864,628.33
5. Step 5: Solve for x
   x = 181,864,628.33/21,279.30
6. Step 6: Final answer
   x = 8,546.55