Finding the Fourth Proportional to 22,208.10, 30,647.17 and 12,776.02

Step by Step Solution

1. Step 1: Write the proportion equation
   22,208.10 : 30,647.17 = 12,776.02 : x
2. Step 2: Convert to fraction form
   22,208.10/30,647.17 = 12,776.02/x
3. Step 3: Cross multiply
   22,208.10x = 30,647.17 × 12,776.02
4. Step 4: Simplify right side
   22,208.10x = 391,548,856.86
5. Step 5: Solve for x
   x = 391,548,856.86/22,208.10
6. Step 6: Final answer
   x = 17,630.90