Finding the Fourth Proportional to 22,161.12, 30,587.59 and 12,735.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,161.12 : 30,587.59 = 12,735.15 : x
2. Step 2: Convert to fraction form
   22,161.12/30,587.59 = 12,735.15/x
3. Step 3: Cross multiply
   22,161.12x = 30,587.59 × 12,735.15
4. Step 4: Simplify right side
   22,161.12x = 389,537,546.79
5. Step 5: Solve for x
   x = 389,537,546.79/22,161.12
6. Step 6: Final answer
   x = 17,577.52