Finding the Fourth Proportional to 5,179.34, 7,769.82 and 1,715.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,179.34 : 7,769.82 = 1,715.78 : x
2. Step 2: Convert to fraction form
   5,179.34/7,769.82 = 1,715.78/x
3. Step 3: Cross multiply
   5,179.34x = 7,769.82 × 1,715.78
4. Step 4: Simplify right side
   5,179.34x = 13,331,301.76
5. Step 5: Solve for x
   x = 13,331,301.76/5,179.34
6. Step 6: Final answer
   x = 2,573.94