Finding the Fourth Proportional to 16,399.52, 22,640.70 and 10,820.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,399.52 : 22,640.70 = 10,820.24 : x
2. Step 2: Convert to fraction form
   16,399.52/22,640.70 = 10,820.24/x
3. Step 3: Cross multiply
   16,399.52x = 22,640.70 × 10,820.24
4. Step 4: Simplify right side
   16,399.52x = 244,977,807.77
5. Step 5: Solve for x
   x = 244,977,807.77/16,399.52
6. Step 6: Final answer
   x = 14,938.11