Finding the Fourth Proportional to 22,377.63, 30,877.10 and 12,687.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,377.63 : 30,877.10 = 12,687.12 : x
2. Step 2: Convert to fraction form
   22,377.63/30,877.10 = 12,687.12/x
3. Step 3: Cross multiply
   22,377.63x = 30,877.10 × 12,687.12
4. Step 4: Simplify right side
   22,377.63x = 391,741,409.52
5. Step 5: Solve for x
   x = 391,741,409.52/22,377.63
6. Step 6: Final answer
   x = 17,505.94