Finding the Fourth Proportional to 5,916.42, 8,165.54 and 3,899.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,916.42 : 8,165.54 = 3,899.52 : x
2. Step 2: Convert to fraction form
   5,916.42/8,165.54 = 3,899.52/x
3. Step 3: Cross multiply
   5,916.42x = 8,165.54 × 3,899.52
4. Step 4: Simplify right side
   5,916.42x = 31,841,667.04
5. Step 5: Solve for x
   x = 31,841,667.04/5,916.42
6. Step 6: Final answer
   x = 5,381.91