Finding the Fourth Proportional to 16,821.59, 23,212.68 and 10,107.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,821.59 : 23,212.68 = 10,107.50 : x
2. Step 2: Convert to fraction form
   16,821.59/23,212.68 = 10,107.50/x
3. Step 3: Cross multiply
   16,821.59x = 23,212.68 × 10,107.50
4. Step 4: Simplify right side
   16,821.59x = 234,622,163.10
5. Step 5: Solve for x
   x = 234,622,163.10/16,821.59
6. Step 6: Final answer
   x = 13,947.68