Finding the Fourth Proportional to 13,019.67, 19,531.94 and 4,255.07

Step by Step Solution

1. Step 1: Write the proportion equation
   13,019.67 : 19,531.94 = 4,255.07 : x
2. Step 2: Convert to fraction form
   13,019.67/19,531.94 = 4,255.07/x
3. Step 3: Cross multiply
   13,019.67x = 19,531.94 × 4,255.07
4. Step 4: Simplify right side
   13,019.67x = 83,109,653.00
5. Step 5: Solve for x
   x = 83,109,653.00/13,019.67
6. Step 6: Final answer
   x = 6,383.39