Finding the Fourth Proportional to 16,245.77, 22,419.48 and 9,172.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,245.77 : 22,419.48 = 9,172.34 : x
2. Step 2: Convert to fraction form
   16,245.77/22,419.48 = 9,172.34/x
3. Step 3: Cross multiply
   16,245.77x = 22,419.48 × 9,172.34
4. Step 4: Simplify right side
   16,245.77x = 205,639,099.56
5. Step 5: Solve for x
   x = 205,639,099.56/16,245.77
6. Step 6: Final answer
   x = 12,658.01