Finding the Fourth Proportional to 19,671.98, 27,133.78 and 12,595.20

Step by Step Solution

1. Step 1: Write the proportion equation
   19,671.98 : 27,133.78 = 12,595.20 : x
2. Step 2: Convert to fraction form
   19,671.98/27,133.78 = 12,595.20/x
3. Step 3: Cross multiply
   19,671.98x = 27,133.78 × 12,595.20
4. Step 4: Simplify right side
   19,671.98x = 341,755,385.86
5. Step 5: Solve for x
   x = 341,755,385.86/19,671.98
6. Step 6: Final answer
   x = 17,372.70