Finding the Fourth Proportional to 9,900.50, 13,662.69 and 5,484.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,900.50 : 13,662.69 = 5,484.50 : x
2. Step 2: Convert to fraction form
   9,900.50/13,662.69 = 5,484.50/x
3. Step 3: Cross multiply
   9,900.50x = 13,662.69 × 5,484.50
4. Step 4: Simplify right side
   9,900.50x = 74,933,023.31
5. Step 5: Solve for x
   x = 74,933,023.31/9,900.50
6. Step 6: Final answer
   x = 7,568.61