Finding the Fourth Proportional to 13,019.76, 19,530.72 and 4,254.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,019.76 : 19,530.72 = 4,254.48 : x
2. Step 2: Convert to fraction form
   13,019.76/19,530.72 = 4,254.48/x
3. Step 3: Cross multiply
   13,019.76x = 19,530.72 × 4,254.48
4. Step 4: Simplify right side
   13,019.76x = 83,093,057.63
5. Step 5: Solve for x
   x = 83,093,057.63/13,019.76
6. Step 6: Final answer
   x = 6,382.07