Finding the Fourth Proportional to 12,791.78, 17,652.69 and 7,415.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,791.78 : 17,652.69 = 7,415.25 : x
2. Step 2: Convert to fraction form
   12,791.78/17,652.69 = 7,415.25/x
3. Step 3: Cross multiply
   12,791.78x = 17,652.69 × 7,415.25
4. Step 4: Simplify right side
   12,791.78x = 130,899,109.52
5. Step 5: Solve for x
   x = 130,899,109.52/12,791.78
6. Step 6: Final answer
   x = 10,233.06