Finding the Fourth Proportional to 9,016.86, 12,429.27 and 8,841.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,016.86 : 12,429.27 = 8,841.90 : x
2. Step 2: Convert to fraction form
   9,016.86/12,429.27 = 8,841.90/x
3. Step 3: Cross multiply
   9,016.86x = 12,429.27 × 8,841.90
4. Step 4: Simplify right side
   9,016.86x = 109,898,362.41
5. Step 5: Solve for x
   x = 109,898,362.41/9,016.86
6. Step 6: Final answer
   x = 12,188.10