Finding the Fourth Proportional to 7,751.99, 10,697.89 and 4,215.23

Step by Step Solution

1. Step 1: Write the proportion equation
   7,751.99 : 10,697.89 = 4,215.23 : x
2. Step 2: Convert to fraction form
   7,751.99/10,697.89 = 4,215.23/x
3. Step 3: Cross multiply
   7,751.99x = 10,697.89 × 4,215.23
4. Step 4: Simplify right side
   7,751.99x = 45,094,045.79
5. Step 5: Solve for x
   x = 45,094,045.79/7,751.99
6. Step 6: Final answer
   x = 5,817.09