Finding the Fourth Proportional to 39,074.15, 53,922.25 and 21,169.61

Step by Step Solution

1. Step 1: Write the proportion equation
   39,074.15 : 53,922.25 = 21,169.61 : x
2. Step 2: Convert to fraction form
   39,074.15/53,922.25 = 21,169.61/x
3. Step 3: Cross multiply
   39,074.15x = 53,922.25 × 21,169.61
4. Step 4: Simplify right side
   39,074.15x = 1,141,513,002.82
5. Step 5: Solve for x
   x = 1,141,513,002.82/39,074.15
6. Step 6: Final answer
   x = 29,214.02