Finding the Fourth Proportional to 16,191.34, 22,343.40 and 9,118.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,191.34 : 22,343.40 = 9,118.06 : x
2. Step 2: Convert to fraction form
   16,191.34/22,343.40 = 9,118.06/x
3. Step 3: Cross multiply
   16,191.34x = 22,343.40 × 9,118.06
4. Step 4: Simplify right side
   16,191.34x = 203,728,461.80
5. Step 5: Solve for x
   x = 203,728,461.80/16,191.34
6. Step 6: Final answer
   x = 12,582.56