Finding the Fourth Proportional to 8,499.48, 11,730.36 and 5,142.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,499.48 : 11,730.36 = 5,142.42 : x
2. Step 2: Convert to fraction form
   8,499.48/11,730.36 = 5,142.42/x
3. Step 3: Cross multiply
   8,499.48x = 11,730.36 × 5,142.42
4. Step 4: Simplify right side
   8,499.48x = 60,322,437.87
5. Step 5: Solve for x
   x = 60,322,437.87/8,499.48
6. Step 6: Final answer
   x = 7,097.19