Finding the Fourth Proportional to 33,656.50, 50,492.04 and 12,880

Step by Step Solution

1. Step 1: Write the proportion equation
   33,656.50 : 50,492.04 = 12,880 : x
2. Step 2: Convert to fraction form
   33,656.50/50,492.04 = 12,880/x
3. Step 3: Cross multiply
   33,656.50x = 50,492.04 × 12,880
4. Step 4: Simplify right side
   33,656.50x = 650,337,475.20
5. Step 5: Solve for x
   x = 650,337,475.20/33,656.50
6. Step 6: Final answer
   x = 19,322.79