Finding the Fourth Proportional to 9,980.16, 13,772.38 and 5,503.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,980.16 : 13,772.38 = 5,503.82 : x
2. Step 2: Convert to fraction form
   9,980.16/13,772.38 = 5,503.82/x
3. Step 3: Cross multiply
   9,980.16x = 13,772.38 × 5,503.82
4. Step 4: Simplify right side
   9,980.16x = 75,800,700.49
5. Step 5: Solve for x
   x = 75,800,700.49/9,980.16
6. Step 6: Final answer
   x = 7,595.14