Finding the Fourth Proportional to 38,727.56, 53,444.06 and 21,960.56

Step by Step Solution

1. Step 1: Write the proportion equation
   38,727.56 : 53,444.06 = 21,960.56 : x
2. Step 2: Convert to fraction form
   38,727.56/53,444.06 = 21,960.56/x
3. Step 3: Cross multiply
   38,727.56x = 53,444.06 × 21,960.56
4. Step 4: Simplify right side
   38,727.56x = 1,173,661,486.27
5. Step 5: Solve for x
   x = 1,173,661,486.27/38,727.56
6. Step 6: Final answer
   x = 30,305.59