Finding the Fourth Proportional to 10,817.31, 16,219.89 and 3,423.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,817.31 : 16,219.89 = 3,423.63 : x
2. Step 2: Convert to fraction form
   10,817.31/16,219.89 = 3,423.63/x
3. Step 3: Cross multiply
   10,817.31x = 16,219.89 × 3,423.63
4. Step 4: Simplify right side
   10,817.31x = 55,530,902.00
5. Step 5: Solve for x
   x = 55,530,902.00/10,817.31
6. Step 6: Final answer
   x = 5,133.52