Finding the Fourth Proportional to 7,174.04, 9,906.71 and 5,402.57

Step by Step Solution

1. Step 1: Write the proportion equation
   7,174.04 : 9,906.71 = 5,402.57 : x
2. Step 2: Convert to fraction form
   7,174.04/9,906.71 = 5,402.57/x
3. Step 3: Cross multiply
   7,174.04x = 9,906.71 × 5,402.57
4. Step 4: Simplify right side
   7,174.04x = 53,521,617.70
5. Step 5: Solve for x
   x = 53,521,617.70/7,174.04
6. Step 6: Final answer
   x = 7,460.46