Finding the Fourth Proportional to 16,111.62, 22,228.02 and 12,330.90

Step by Step Solution

1. Step 1: Write the proportion equation
   16,111.62 : 22,228.02 = 12,330.90 : x
2. Step 2: Convert to fraction form
   16,111.62/22,228.02 = 12,330.90/x
3. Step 3: Cross multiply
   16,111.62x = 22,228.02 × 12,330.90
4. Step 4: Simplify right side
   16,111.62x = 274,091,491.82
5. Step 5: Solve for x
   x = 274,091,491.82/16,111.62
6. Step 6: Final answer
   x = 17,012.04