Finding the Fourth Proportional to 12,859.42, 17,745.84 and 7,554.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,859.42 : 17,745.84 = 7,554.72 : x
2. Step 2: Convert to fraction form
   12,859.42/17,745.84 = 7,554.72/x
3. Step 3: Cross multiply
   12,859.42x = 17,745.84 × 7,554.72
4. Step 4: Simplify right side
   12,859.42x = 134,064,852.36
5. Step 5: Solve for x
   x = 134,064,852.36/12,859.42
6. Step 6: Final answer
   x = 10,425.42