Finding the Fourth Proportional to 50,856.82, 76,276.52 and 13,417.28

Step by Step Solution

1. Step 1: Write the proportion equation
   50,856.82 : 76,276.52 = 13,417.28 : x
2. Step 2: Convert to fraction form
   50,856.82/76,276.52 = 13,417.28/x
3. Step 3: Cross multiply
   50,856.82x = 76,276.52 × 13,417.28
4. Step 4: Simplify right side
   50,856.82x = 1,023,423,099.62
5. Step 5: Solve for x
   x = 1,023,423,099.62/50,856.82
6. Step 6: Final answer
   x = 20,123.62