Finding the Fourth Proportional to 15,419.36, 23,119.32 and 8,498.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,419.36 : 23,119.32 = 8,498.72 : x
2. Step 2: Convert to fraction form
   15,419.36/23,119.32 = 8,498.72/x
3. Step 3: Cross multiply
   15,419.36x = 23,119.32 × 8,498.72
4. Step 4: Simplify right side
   15,419.36x = 196,484,627.27
5. Step 5: Solve for x
   x = 196,484,627.27/15,419.36
6. Step 6: Final answer
   x = 12,742.72