Finding the Fourth Proportional to 50,808, 76,214.16 and 13,872

Step by Step Solution

1. Step 1: Write the proportion equation
   50,808 : 76,214.16 = 13,872 : x
2. Step 2: Convert to fraction form
   50,808/76,214.16 = 13,872/x
3. Step 3: Cross multiply
   50,808x = 76,214.16 × 13,872
4. Step 4: Simplify right side
   50,808x = 1,057,242,827.52
5. Step 5: Solve for x
   x = 1,057,242,827.52/50,808
6. Step 6: Final answer
   x = 20,808.59