Finding the Fourth Proportional to 9,980.64, 13,773.42 and 5,504.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,980.64 : 13,773.42 = 5,504.94 : x
2. Step 2: Convert to fraction form
   9,980.64/13,773.42 = 5,504.94/x
3. Step 3: Cross multiply
   9,980.64x = 13,773.42 × 5,504.94
4. Step 4: Simplify right side
   9,980.64x = 75,821,850.69
5. Step 5: Solve for x
   x = 75,821,850.69/9,980.64
6. Step 6: Final answer
   x = 7,596.89