Finding the Fourth Proportional to 39,046.86, 53,884.42 and 21,141.83

Step by Step Solution

1. Step 1: Write the proportion equation
   39,046.86 : 53,884.42 = 21,141.83 : x
2. Step 2: Convert to fraction form
   39,046.86/53,884.42 = 21,141.83/x
3. Step 3: Cross multiply
   39,046.86x = 53,884.42 × 21,141.83
4. Step 4: Simplify right side
   39,046.86x = 1,139,215,329.15
5. Step 5: Solve for x
   x = 1,139,215,329.15/39,046.86
6. Step 6: Final answer
   x = 29,175.59