Finding the Fourth Proportional to 5,134.61, 7,085.72 and 2,896.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,134.61 : 7,085.72 = 2,896.50 : x
2. Step 2: Convert to fraction form
   5,134.61/7,085.72 = 2,896.50/x
3. Step 3: Cross multiply
   5,134.61x = 7,085.72 × 2,896.50
4. Step 4: Simplify right side
   5,134.61x = 20,523,787.98
5. Step 5: Solve for x
   x = 20,523,787.98/5,134.61
6. Step 6: Final answer
   x = 3,997.15