Finding the Fourth Proportional to 36,688.50, 50,630.76 and 19,921.50

Step by Step Solution

1. Step 1: Write the proportion equation
   36,688.50 : 50,630.76 = 19,921.50 : x
2. Step 2: Convert to fraction form
   36,688.50/50,630.76 = 19,921.50/x
3. Step 3: Cross multiply
   36,688.50x = 50,630.76 × 19,921.50
4. Step 4: Simplify right side
   36,688.50x = 1,008,640,685.34
5. Step 5: Solve for x
   x = 1,008,640,685.34/36,688.50
6. Step 6: Final answer
   x = 27,492.01