Finding the Fourth Proportional to 5,147.50, 7,731.61 and 3,071.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,147.50 : 7,731.61 = 3,071.56 : x
2. Step 2: Convert to fraction form
   5,147.50/7,731.61 = 3,071.56/x
3. Step 3: Cross multiply
   5,147.50x = 7,731.61 × 3,071.56
4. Step 4: Simplify right side
   5,147.50x = 23,748,104.01
5. Step 5: Solve for x
   x = 23,748,104.01/5,147.50
6. Step 6: Final answer
   x = 4,613.52