Finding the Fourth Proportional to 8,499.08, 11,729.28 and 5,142.03

Step by Step Solution

1. Step 1: Write the proportion equation
   8,499.08 : 11,729.28 = 5,142.03 : x
2. Step 2: Convert to fraction form
   8,499.08/11,729.28 = 5,142.03/x
3. Step 3: Cross multiply
   8,499.08x = 11,729.28 × 5,142.03
4. Step 4: Simplify right side
   8,499.08x = 60,312,309.64
5. Step 5: Solve for x
   x = 60,312,309.64/8,499.08
6. Step 6: Final answer
   x = 7,096.34