Finding the Fourth Proportional to 16,610, 22,921.82 and 9,158

Step by Step Solution

1. Step 1: Write the proportion equation
   16,610 : 22,921.82 = 9,158 : x
2. Step 2: Convert to fraction form
   16,610/22,921.82 = 9,158/x
3. Step 3: Cross multiply
   16,610x = 22,921.82 × 9,158
4. Step 4: Simplify right side
   16,610x = 209,918,027.56
5. Step 5: Solve for x
   x = 209,918,027.56/16,610
6. Step 6: Final answer
   x = 12,638.05