Finding the Fourth Proportional to 22,187.91, 30,618.90 and 12,116.07

Step by Step Solution

1. Step 1: Write the proportion equation
   22,187.91 : 30,618.90 = 12,116.07 : x
2. Step 2: Convert to fraction form
   22,187.91/30,618.90 = 12,116.07/x
3. Step 3: Cross multiply
   22,187.91x = 30,618.90 × 12,116.07
4. Step 4: Simplify right side
   22,187.91x = 370,980,735.72
5. Step 5: Solve for x
   x = 370,980,735.72/22,187.91
6. Step 6: Final answer
   x = 16,719.95