Finding the Fourth Proportional to 5,123.57, 7,686.16 and 1,836.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.57 : 7,686.16 = 1,836.59 : x
2. Step 2: Convert to fraction form
   5,123.57/7,686.16 = 1,836.59/x
3. Step 3: Cross multiply
   5,123.57x = 7,686.16 × 1,836.59
4. Step 4: Simplify right side
   5,123.57x = 14,116,324.59
5. Step 5: Solve for x
   x = 14,116,324.59/5,123.57
6. Step 6: Final answer
   x = 2,755.17