Finding the Fourth Proportional to 13,042.12, 19,563.72 and 5,251

Step by Step Solution

1. Step 1: Write the proportion equation
   13,042.12 : 19,563.72 = 5,251 : x
2. Step 2: Convert to fraction form
   13,042.12/19,563.72 = 5,251/x
3. Step 3: Cross multiply
   13,042.12x = 19,563.72 × 5,251
4. Step 4: Simplify right side
   13,042.12x = 102,729,093.72
5. Step 5: Solve for x
   x = 102,729,093.72/13,042.12
6. Step 6: Final answer
   x = 7,876.72