Finding the Fourth Proportional to 22,402.22, 30,910.10 and 12,965.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,402.22 : 30,910.10 = 12,965.32 : x
2. Step 2: Convert to fraction form
   22,402.22/30,910.10 = 12,965.32/x
3. Step 3: Cross multiply
   22,402.22x = 30,910.10 × 12,965.32
4. Step 4: Simplify right side
   22,402.22x = 400,759,337.73
5. Step 5: Solve for x
   x = 400,759,337.73/22,402.22
6. Step 6: Final answer
   x = 17,889.27