Finding the Fourth Proportional to 33,255.21, 49,885.89 and 13,259.88

Step by Step Solution

1. Step 1: Write the proportion equation
   33,255.21 : 49,885.89 = 13,259.88 : x
2. Step 2: Convert to fraction form
   33,255.21/49,885.89 = 13,259.88/x
3. Step 3: Cross multiply
   33,255.21x = 49,885.89 × 13,259.88
4. Step 4: Simplify right side
   33,255.21x = 661,480,964.82
5. Step 5: Solve for x
   x = 661,480,964.82/33,255.21
6. Step 6: Final answer
   x = 19,891.05