Finding the Fourth Proportional to 9,980.96, 13,772.96 and 5,504.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,980.96 : 13,772.96 = 5,504.88 : x
2. Step 2: Convert to fraction form
   9,980.96/13,772.96 = 5,504.88/x
3. Step 3: Cross multiply
   9,980.96x = 13,772.96 × 5,504.88
4. Step 4: Simplify right side
   9,980.96x = 75,818,492.04
5. Step 5: Solve for x
   x = 75,818,492.04/9,980.96
6. Step 6: Final answer
   x = 7,596.31