Finding the Fourth Proportional to 9,980.39, 13,773.01 and 5,504.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,980.39 : 13,773.01 = 5,504.03 : x
2. Step 2: Convert to fraction form
   9,980.39/13,773.01 = 5,504.03/x
3. Step 3: Cross multiply
   9,980.39x = 13,773.01 × 5,504.03
4. Step 4: Simplify right side
   9,980.39x = 75,807,016.32
5. Step 5: Solve for x
   x = 75,807,016.32/9,980.39
6. Step 6: Final answer
   x = 7,595.60