Finding the Fourth Proportional to 7,123.89, 10,676.52 and 5,156.14

Step by Step Solution

1. Step 1: Write the proportion equation
   7,123.89 : 10,676.52 = 5,156.14 : x
2. Step 2: Convert to fraction form
   7,123.89/10,676.52 = 5,156.14/x
3. Step 3: Cross multiply
   7,123.89x = 10,676.52 × 5,156.14
4. Step 4: Simplify right side
   7,123.89x = 55,049,631.83
5. Step 5: Solve for x
   x = 55,049,631.83/7,123.89
6. Step 6: Final answer
   x = 7,727.47