Finding the Fourth Proportional to 50,852.81, 76,272.71 and 13,415.69

Step by Step Solution

1. Step 1: Write the proportion equation
   50,852.81 : 76,272.71 = 13,415.69 : x
2. Step 2: Convert to fraction form
   50,852.81/76,272.71 = 13,415.69/x
3. Step 3: Cross multiply
   50,852.81x = 76,272.71 × 13,415.69
4. Step 4: Simplify right side
   50,852.81x = 1,023,250,584.38
5. Step 5: Solve for x
   x = 1,023,250,584.38/50,852.81
6. Step 6: Final answer
   x = 20,121.81