Finding the Fourth Proportional to 9,978.97, 13,771.07 and 5,502.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.97 : 13,771.07 = 5,502.88 : x
2. Step 2: Convert to fraction form
   9,978.97/13,771.07 = 5,502.88/x
3. Step 3: Cross multiply
   9,978.97x = 13,771.07 × 5,502.88
4. Step 4: Simplify right side
   9,978.97x = 75,780,556.02
5. Step 5: Solve for x
   x = 75,780,556.02/9,978.97
6. Step 6: Final answer
   x = 7,594.03