Finding the Fourth Proportional to 8,015.72, 11,064.78 and 7,174.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,015.72 : 11,064.78 = 7,174.94 : x
2. Step 2: Convert to fraction form
   8,015.72/11,064.78 = 7,174.94/x
3. Step 3: Cross multiply
   8,015.72x = 11,064.78 × 7,174.94
4. Step 4: Simplify right side
   8,015.72x = 79,389,088.23
5. Step 5: Solve for x
   x = 79,389,088.23/8,015.72
6. Step 6: Final answer
   x = 9,904.18