Finding the Fourth Proportional to 36,069.52, 49,781.56 and 21,917.20

Step by Step Solution

1. Step 1: Write the proportion equation
   36,069.52 : 49,781.56 = 21,917.20 : x
2. Step 2: Convert to fraction form
   36,069.52/49,781.56 = 21,917.20/x
3. Step 3: Cross multiply
   36,069.52x = 49,781.56 × 21,917.20
4. Step 4: Simplify right side
   36,069.52x = 1,091,072,406.83
5. Step 5: Solve for x
   x = 1,091,072,406.83/36,069.52
6. Step 6: Final answer
   x = 30,249.15