Finding the Fourth Proportional to 7,906.50, 10,911.15 and 5,116.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,906.50 : 10,911.15 = 5,116.86 : x
2. Step 2: Convert to fraction form
   7,906.50/10,911.15 = 5,116.86/x
3. Step 3: Cross multiply
   7,906.50x = 10,911.15 × 5,116.86
4. Step 4: Simplify right side
   7,906.50x = 55,830,826.99
5. Step 5: Solve for x
   x = 55,830,826.99/7,906.50
6. Step 6: Final answer
   x = 7,061.38