Finding the Fourth Proportional to 13,097.45, 19,635.15 and 5,311.73

Step by Step Solution

1. Step 1: Write the proportion equation
   13,097.45 : 19,635.15 = 5,311.73 : x
2. Step 2: Convert to fraction form
   13,097.45/19,635.15 = 5,311.73/x
3. Step 3: Cross multiply
   13,097.45x = 19,635.15 × 5,311.73
4. Step 4: Simplify right side
   13,097.45x = 104,296,615.31
5. Step 5: Solve for x
   x = 104,296,615.31/13,097.45
6. Step 6: Final answer
   x = 7,963.12