Finding the Fourth Proportional to 7,166.72, 9,890.64 and 4,334.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,166.72 : 9,890.64 = 4,334.48 : x
2. Step 2: Convert to fraction form
   7,166.72/9,890.64 = 4,334.48/x
3. Step 3: Cross multiply
   7,166.72x = 9,890.64 × 4,334.48
4. Step 4: Simplify right side
   7,166.72x = 42,870,781.27
5. Step 5: Solve for x
   x = 42,870,781.27/7,166.72
6. Step 6: Final answer
   x = 5,981.92