Finding the Fourth Proportional to 22,436.42, 30,961.88 and 12,875.91

Step by Step Solution

1. Step 1: Write the proportion equation
   22,436.42 : 30,961.88 = 12,875.91 : x
2. Step 2: Convert to fraction form
   22,436.42/30,961.88 = 12,875.91/x
3. Step 3: Cross multiply
   22,436.42x = 30,961.88 × 12,875.91
4. Step 4: Simplify right side
   22,436.42x = 398,662,412.50
5. Step 5: Solve for x
   x = 398,662,412.50/22,436.42
6. Step 6: Final answer
   x = 17,768.54