Finding the Fourth Proportional to 5,613.12, 7,736.76 and 5,142.48

Step by Step Solution

1. Step 1: Write the proportion equation
   5,613.12 : 7,736.76 = 5,142.48 : x
2. Step 2: Convert to fraction form
   5,613.12/7,736.76 = 5,142.48/x
3. Step 3: Cross multiply
   5,613.12x = 7,736.76 × 5,142.48
4. Step 4: Simplify right side
   5,613.12x = 39,786,133.56
5. Step 5: Solve for x
   x = 39,786,133.56/5,613.12
6. Step 6: Final answer
   x = 7,088.06