Finding the Fourth Proportional to 16,188.86, 22,340.61 and 9,115.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,188.86 : 22,340.61 = 9,115.34 : x
2. Step 2: Convert to fraction form
   16,188.86/22,340.61 = 9,115.34/x
3. Step 3: Cross multiply
   16,188.86x = 22,340.61 × 9,115.34
4. Step 4: Simplify right side
   16,188.86x = 203,642,144.25
5. Step 5: Solve for x
   x = 203,642,144.25/16,188.86
6. Step 6: Final answer
   x = 12,579.15