Finding the Fourth Proportional to 21,054.96, 31,582.47 and 5,472.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,054.96 : 31,582.47 = 5,472.59 : x
2. Step 2: Convert to fraction form
   21,054.96/31,582.47 = 5,472.59/x
3. Step 3: Cross multiply
   21,054.96x = 31,582.47 × 5,472.59
4. Step 4: Simplify right side
   21,054.96x = 172,837,751.58
5. Step 5: Solve for x
   x = 172,837,751.58/21,054.96
6. Step 6: Final answer
   x = 8,208.89