Finding the Fourth Proportional to 5,916.65, 8,162.39 and 3,897.45

Step by Step Solution

1. Step 1: Write the proportion equation
   5,916.65 : 8,162.39 = 3,897.45 : x
2. Step 2: Convert to fraction form
   5,916.65/8,162.39 = 3,897.45/x
3. Step 3: Cross multiply
   5,916.65x = 8,162.39 × 3,897.45
4. Step 4: Simplify right side
   5,916.65x = 31,812,487.42
5. Step 5: Solve for x
   x = 31,812,487.42/5,916.65
6. Step 6: Final answer
   x = 5,376.78