Finding the Fourth Proportional to 8,242.72, 11,369.72 and 5,410.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,242.72 : 11,369.72 = 5,410.28 : x
2. Step 2: Convert to fraction form
   8,242.72/11,369.72 = 5,410.28/x
3. Step 3: Cross multiply
   8,242.72x = 11,369.72 × 5,410.28
4. Step 4: Simplify right side
   8,242.72x = 61,513,368.72
5. Step 5: Solve for x
   x = 61,513,368.72/8,242.72
6. Step 6: Final answer
   x = 7,462.75