Finding the Fourth Proportional to 13,018.51, 19,523.31 and 4,251.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.51 : 19,523.31 = 4,251.25 : x
2. Step 2: Convert to fraction form
   13,018.51/19,523.31 = 4,251.25/x
3. Step 3: Cross multiply
   13,018.51x = 19,523.31 × 4,251.25
4. Step 4: Simplify right side
   13,018.51x = 82,998,471.64
5. Step 5: Solve for x
   x = 82,998,471.64/13,018.51
6. Step 6: Final answer
   x = 6,375.42