Finding the Fourth Proportional to 9,979.15, 13,770.89 and 5,502.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,979.15 : 13,770.89 = 5,502.89 : x
2. Step 2: Convert to fraction form
   9,979.15/13,770.89 = 5,502.89/x
3. Step 3: Cross multiply
   9,979.15x = 13,770.89 × 5,502.89
4. Step 4: Simplify right side
   9,979.15x = 75,779,627.48
5. Step 5: Solve for x
   x = 75,779,627.48/9,979.15
6. Step 6: Final answer
   x = 7,593.80