Finding the Fourth Proportional to 3,931.46, 5,425.94 and 3,599.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.46 : 5,425.94 = 3,599.29 : x
2. Step 2: Convert to fraction form
   3,931.46/5,425.94 = 3,599.29/x
3. Step 3: Cross multiply
   3,931.46x = 5,425.94 × 3,599.29
4. Step 4: Simplify right side
   3,931.46x = 19,529,486.46
5. Step 5: Solve for x
   x = 19,529,486.46/3,931.46
6. Step 6: Final answer
   x = 4,967.50