Finding the Fourth Proportional to 22,189.60, 30,620.50 and 12,116.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,189.60 : 30,620.50 = 12,116.10 : x
2. Step 2: Convert to fraction form
   22,189.60/30,620.50 = 12,116.10/x
3. Step 3: Cross multiply
   22,189.60x = 30,620.50 × 12,116.10
4. Step 4: Simplify right side
   22,189.60x = 371,001,040.05
5. Step 5: Solve for x
   x = 371,001,040.05/22,189.60
6. Step 6: Final answer
   x = 16,719.59