Finding the Fourth Proportional to 21,031.05, 31,547.39 and 5,448.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,031.05 : 31,547.39 = 5,448.27 : x
2. Step 2: Convert to fraction form
   21,031.05/31,547.39 = 5,448.27/x
3. Step 3: Cross multiply
   21,031.05x = 31,547.39 × 5,448.27
4. Step 4: Simplify right side
   21,031.05x = 171,878,671.27
5. Step 5: Solve for x
   x = 171,878,671.27/21,031.05
6. Step 6: Final answer
   x = 8,172.61