Finding the Fourth Proportional to 9,996.79, 13,795.50 and 5,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,996.79 : 13,795.50 = 5,520.50 : x
2. Step 2: Convert to fraction form
   9,996.79/13,795.50 = 5,520.50/x
3. Step 3: Cross multiply
   9,996.79x = 13,795.50 × 5,520.50
4. Step 4: Simplify right side
   9,996.79x = 76,158,112.94
5. Step 5: Solve for x
   x = 76,158,112.94/9,996.79
6. Step 6: Final answer
   x = 7,618.26