Finding the Fourth Proportional to 5,719.01, 7,898.40 and 3,931.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,719.01 : 7,898.40 = 3,931.22 : x
2. Step 2: Convert to fraction form
   5,719.01/7,898.40 = 3,931.22/x
3. Step 3: Cross multiply
   5,719.01x = 7,898.40 × 3,931.22
4. Step 4: Simplify right side
   5,719.01x = 31,050,308.56
5. Step 5: Solve for x
   x = 31,050,308.56/5,719.01
6. Step 6: Final answer
   x = 5,429.32