Finding the Fourth Proportional to 20,854.52, 31,281.98 and 5,272.14

Step by Step Solution

1. Step 1: Write the proportion equation
   20,854.52 : 31,281.98 = 5,272.14 : x
2. Step 2: Convert to fraction form
   20,854.52/31,281.98 = 5,272.14/x
3. Step 3: Cross multiply
   20,854.52x = 31,281.98 × 5,272.14
4. Step 4: Simplify right side
   20,854.52x = 164,922,978.04
5. Step 5: Solve for x
   x = 164,922,978.04/20,854.52
6. Step 6: Final answer
   x = 7,908.26