Finding the Fourth Proportional to 12,746.25, 19,131.55 and 7,825.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,746.25 : 19,131.55 = 7,825.50 : x
2. Step 2: Convert to fraction form
   12,746.25/19,131.55 = 7,825.50/x
3. Step 3: Cross multiply
   12,746.25x = 19,131.55 × 7,825.50
4. Step 4: Simplify right side
   12,746.25x = 149,713,953.23
5. Step 5: Solve for x
   x = 149,713,953.23/12,746.25
6. Step 6: Final answer
   x = 11,745.72