Finding the Fourth Proportional to 11,426.42, 17,137.71 and 3,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,426.42 : 17,137.71 = 3,216.50 : x
2. Step 2: Convert to fraction form
   11,426.42/17,137.71 = 3,216.50/x
3. Step 3: Cross multiply
   11,426.42x = 17,137.71 × 3,216.50
4. Step 4: Simplify right side
   11,426.42x = 55,123,444.22
5. Step 5: Solve for x
   x = 55,123,444.22/11,426.42
6. Step 6: Final answer
   x = 4,824.21