Finding the Fourth Proportional to 12,753.93, 19,111.39 and 8,578.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,753.93 : 19,111.39 = 8,578.48 : x
2. Step 2: Convert to fraction form
   12,753.93/19,111.39 = 8,578.48/x
3. Step 3: Cross multiply
   12,753.93x = 19,111.39 × 8,578.48
4. Step 4: Simplify right side
   12,753.93x = 163,946,676.89
5. Step 5: Solve for x
   x = 163,946,676.89/12,753.93
6. Step 6: Final answer
   x = 12,854.60