Finding the Fourth Proportional to 16,438.56, 24,664.05 and 9,869.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,438.56 : 24,664.05 = 9,869.31 : x
2. Step 2: Convert to fraction form
   16,438.56/24,664.05 = 9,869.31/x
3. Step 3: Cross multiply
   16,438.56x = 24,664.05 × 9,869.31
4. Step 4: Simplify right side
   16,438.56x = 243,417,155.31
5. Step 5: Solve for x
   x = 243,417,155.31/16,438.56
6. Step 6: Final answer
   x = 14,807.69