Finding the Fourth Proportional to 38,849.76, 53,617.41 and 21,854.72

Step by Step Solution

1. Step 1: Write the proportion equation
   38,849.76 : 53,617.41 = 21,854.72 : x
2. Step 2: Convert to fraction form
   38,849.76/53,617.41 = 21,854.72/x
3. Step 3: Cross multiply
   38,849.76x = 53,617.41 × 21,854.72
4. Step 4: Simplify right side
   38,849.76x = 1,171,793,105.31
5. Step 5: Solve for x
   x = 1,171,793,105.31/38,849.76
6. Step 6: Final answer
   x = 30,162.17