Finding the Fourth Proportional to 16,602.56, 22,911.60 and 9,150.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,602.56 : 22,911.60 = 9,150.56 : x
2. Step 2: Convert to fraction form
   16,602.56/22,911.60 = 9,150.56/x
3. Step 3: Cross multiply
   16,602.56x = 22,911.60 × 9,150.56
4. Step 4: Simplify right side
   16,602.56x = 209,653,970.50
5. Step 5: Solve for x
   x = 209,653,970.50/16,602.56
6. Step 6: Final answer
   x = 12,627.81