Finding the Fourth Proportional to 9,979.17, 13,771.02 and 5,502.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,979.17 : 13,771.02 = 5,502.79 : x
2. Step 2: Convert to fraction form
   9,979.17/13,771.02 = 5,502.79/x
3. Step 3: Cross multiply
   9,979.17x = 13,771.02 × 5,502.79
4. Step 4: Simplify right side
   9,979.17x = 75,779,031.15
5. Step 5: Solve for x
   x = 75,779,031.15/9,979.17
6. Step 6: Final answer
   x = 7,593.72