Finding the Fourth Proportional to 5,141.82, 7,715.43 and 2,803.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,141.82 : 7,715.43 = 2,803.50 : x
2. Step 2: Convert to fraction form
   5,141.82/7,715.43 = 2,803.50/x
3. Step 3: Cross multiply
   5,141.82x = 7,715.43 × 2,803.50
4. Step 4: Simplify right side
   5,141.82x = 21,630,208.01
5. Step 5: Solve for x
   x = 21,630,208.01/5,141.82
6. Step 6: Final answer
   x = 4,206.72