Finding the Fourth Proportional to 50,724, 76,086.18 and 13,788

Step by Step Solution

1. Step 1: Write the proportion equation
   50,724 : 76,086.18 = 13,788 : x
2. Step 2: Convert to fraction form
   50,724/76,086.18 = 13,788/x
3. Step 3: Cross multiply
   50,724x = 76,086.18 × 13,788
4. Step 4: Simplify right side
   50,724x = 1,049,076,249.84
5. Step 5: Solve for x
   x = 1,049,076,249.84/50,724
6. Step 6: Final answer
   x = 20,682.05