Finding the Fourth Proportional to 7,828.50, 10,739 and 7,404.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,828.50 : 10,739 = 7,404.81 : x
2. Step 2: Convert to fraction form
   7,828.50/10,739 = 7,404.81/x
3. Step 3: Cross multiply
   7,828.50x = 10,739 × 7,404.81
4. Step 4: Simplify right side
   7,828.50x = 79,520,254.59
5. Step 5: Solve for x
   x = 79,520,254.59/7,828.50
6. Step 6: Final answer
   x = 10,157.79