Finding the Fourth Proportional to 13,175.30, 19,776.86 and 12,877.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,175.30 : 19,776.86 = 12,877.82 : x
2. Step 2: Convert to fraction form
   13,175.30/19,776.86 = 12,877.82/x
3. Step 3: Cross multiply
   13,175.30x = 19,776.86 × 12,877.82
4. Step 4: Simplify right side
   13,175.30x = 254,682,843.25
5. Step 5: Solve for x
   x = 254,682,843.25/13,175.30
6. Step 6: Final answer
   x = 19,330.33